251552543253441 has 48 divisors (see below), whose sum is σ = 371238644073024. Its totient is φ = 150969990535168.

The previous prime is 251552543253391. The next prime is 251552543253461. The reversal of 251552543253441 is 144352345255152.

It is not a de Polignac number, because 251552543253441 - 2⁶ = 251552543253377 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (251552543253461) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 22816860 + ... + 31995533.

It is an arithmetic number, because the mean of its divisors is an integer number (7734138418188).

Almost surely, 2^{251552543253441} is an apocalyptic number.

It is an amenable number.

251552543253441 is a deficient number, since it is larger than the sum of its proper divisors (119686100819583).

251552543253441 is a wasteful number, since it uses less digits than its factorization.

251552543253441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54812578 (or 54812549 counting only the distinct ones).

The product of its digits is 14400000, while the sum is 51.

The spelling of 251552543253441 in words is "two hundred fifty-one trillion, five hundred fifty-two billion, five hundred forty-three million, two hundred fifty-three thousand, four hundred forty-one".