251120000054 has 32 divisors (see below), whose sum is σ = 469660778496. Its totient is φ = 97831926720.

The previous prime is 251119999997. The next prime is 251120000083. The reversal of 251120000054 is 450000021152.

It is a super-2 number, since 2×251120000054² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 251119999990 and 251120000035.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2433002 + ... + 2534114.

It is an arithmetic number, because the mean of its divisors is an integer number (14676899328).

Almost surely, 2^251120000054 is an apocalyptic number.

251120000054 is a deficient number, since it is larger than the sum of its proper divisors (218540778442).

251120000054 is a wasteful number, since it uses less digits than its factorization.

251120000054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117260.

The product of its (nonzero) digits is 400, while the sum is 20.

The spelling of 251120000054 in words is "two hundred fifty-one billion, one hundred twenty million, fifty-four", and thus it is an aban number.