51554111145515 has 32 divisors (see below), whose sum is σ = 70507475732160. Its totient is φ = 35842580032000.

The previous prime is 51554111145487. The next prime is 51554111145659.

It is a happy number.

51554111145515 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 51554111145515 - 2⁸ = 51554111145259 is a prime.

It is a super-2 number, since 2×51554111145515² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 159850424 + ... + 160172613.

It is an arithmetic number, because the mean of its divisors is an integer number (2203358616630).

Almost surely, 2^{51554111145515} is an apocalyptic number.

51554111145515 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51554111145515 is a deficient number, since it is larger than the sum of its proper divisors (18953364586645).

51554111145515 is a wasteful number, since it uses less digits than its factorization.

51554111145515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320023183.

The product of its digits is 250000, while the sum is 44.

The spelling of 51554111145515 in words is "fifty-one trillion, five hundred fifty-four billion, one hundred eleven million, one hundred forty-five thousand, five hundred fifteen".