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54713420281 = 1321929472
BaseRepresentation
bin110010111101001011…
…001000100111111001
312020020001221201201101
4302331023020213321
51344023113422111
641045054251401
73644564253562
oct627513104771
9166201851641
1054713420281
1121227332513
12a72b4b6b61
13520c41c100
142910713169
15165358dbc1
hexcbd2c89f9

54713420281 has 27 divisors (see below), whose sum is σ = 62594311311. Its totient is φ = 47796029424.

The previous prime is 54713420273. The next prime is 54713420297. The reversal of 54713420281 is 18202431745.

The square root of 54713420281 is 233909.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 8093701225 + 46619719056 = 89965^2 + 215916^2 .

It is not a de Polignac number, because 54713420281 - 23 = 54713420273 is a prime.

It is a super-2 number, since 2×547134202812 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 54713420281.

It is not an unprimeable number, because it can be changed into a prime (54713420221) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 57775050 + ... + 57775996.

Almost surely, 254713420281 is an apocalyptic number.

54713420281 is the 233909-th square number.

54713420281 is the 116955-th centered octagonal number.

It is an amenable number.

54713420281 is a deficient number, since it is larger than the sum of its proper divisors (7880891030).

54713420281 is an frugal number, since it uses more digits than its factorization.

54713420281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1958 (or 979 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 37.

The spelling of 54713420281 in words is "fifty-four billion, seven hundred thirteen million, four hundred twenty thousand, two hundred eighty-one".

Divisors: 1 13 19 169 247 361 947 3211 4693 12311 17993 61009 160043 233909 341867 896809 3040817 4444271 11658517 17039371 57775523 151560721 221511823 323748049 2879653699 4208724637 54713420281