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54752531781 = 319960570733
BaseRepresentation
bin110010111111100000…
…010101010101000101
312020022210112210121110
4302333200111111011
51344113122004111
641053012435233
73645550561353
oct627740252505
9166283483543
1054752531781
1121247416572
12a740618b19
1352175643cc
1429159b47d3
151656c175a6
hexcbf815545

54752531781 has 8 divisors (see below), whose sum is σ = 76845658720. Its totient is φ = 34580546352.

The previous prime is 54752531753. The next prime is 54752531791. The reversal of 54752531781 is 18713525745.

54752531781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 54752531781 - 210 = 54752530757 is a prime.

It is a super-2 number, since 2×547525317812 (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 54752531781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54752531741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 480285310 + ... + 480285423.

It is an arithmetic number, because the mean of its divisors is an integer number (9605707340).

Almost surely, 254752531781 is an apocalyptic number.

It is an amenable number.

54752531781 is a deficient number, since it is larger than the sum of its proper divisors (22093126939).

54752531781 is a wasteful number, since it uses less digits than its factorization.

54752531781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960570755.

The product of its digits is 1176000, while the sum is 48.

The spelling of 54752531781 in words is "fifty-four billion, seven hundred fifty-two million, five hundred thirty-one thousand, seven hundred eighty-one".

Divisors: 1 3 19 57 960570733 2881712199 18250843927 54752531781