51215224057 has 16 divisors (see below), whose sum is σ = 52375554000. Its totient is φ = 50066231040.

The previous prime is 51215224051. The next prime is 51215224103. The reversal of 51215224057 is 75042251215.

It can be written as a sum of positive squares in 8 ways, for example, as 25812920896 + 25402303161 = 160664^2 + 159381^2 .

It is a cyclic number.

It is not a de Polignac number, because 51215224057 - 2⁷ = 51215223929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51215224051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6744819 + ... + 6752407.

It is an arithmetic number, because the mean of its divisors is an integer number (3273472125).

Almost surely, 2^51215224057 is an apocalyptic number.

It is an amenable number.

51215224057 is a deficient number, since it is larger than the sum of its proper divisors (1160329943).

51215224057 is a wasteful number, since it uses less digits than its factorization.

51215224057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8316.

The product of its (nonzero) digits is 28000, while the sum is 34.

The spelling of 51215224057 in words is "fifty-one billion, two hundred fifteen million, two hundred twenty-four thousand, fifty-seven".