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54630221453 = 208092625317
BaseRepresentation
bin110010111000001101…
…110000011010001101
312020000021101210101022
4302320031300122031
51343340314041303
641032523123525
73642534135443
oct627015603215
9166007353338
1054630221453
1121194376a55
12a7076735a5
1351c810ba32
142903656b93
15164b107438
hexcb837068d

54630221453 has 4 divisors (see below), whose sum is σ = 54632867580. Its totient is φ = 54627575328.

The previous prime is 54630221441. The next prime is 54630221467. The reversal of 54630221453 is 35412203645.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8874016804 + 45756204649 = 94202^2 + 213907^2 .

It is a cyclic number.

It is not a de Polignac number, because 54630221453 - 210 = 54630220429 is a prime.

It is a super-2 number, since 2×546302214532 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54630221053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1291850 + ... + 1333467.

It is an arithmetic number, because the mean of its divisors is an integer number (13658216895).

Almost surely, 254630221453 is an apocalyptic number.

It is an amenable number.

54630221453 is a deficient number, since it is larger than the sum of its proper divisors (2646127).

54630221453 is a wasteful number, since it uses less digits than its factorization.

54630221453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2646126.

The product of its (nonzero) digits is 86400, while the sum is 35.

The spelling of 54630221453 in words is "fifty-four billion, six hundred thirty million, two hundred twenty-one thousand, four hundred fifty-three".

Divisors: 1 20809 2625317 54630221453