51512255270 has 64 divisors (see below), whose sum is σ = 114266073600. Its totient is φ = 16323690240.

The previous prime is 51512255269. The next prime is 51512255297. The reversal of 51512255270 is 7255221515.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 51512255270.

It is a congruent number.

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, 417800 + ... + 526859.

It is an arithmetic number, because the mean of its divisors is an integer number (1785407400).

Almost surely, 2^51512255270 is an apocalyptic number.

51512255270 is an abundant number, since it is smaller than the sum of its proper divisors (62753818330).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51512255270 is a wasteful number, since it uses less digits than its factorization.

51512255270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 944733.

The product of its (nonzero) digits is 35000, while the sum is 35.

Adding to 51512255270 its reverse (7255221515), we get a palindrome (58767476785).

The spelling of 51512255270 in words is "fifty-one billion, five hundred twelve million, two hundred fifty-five thousand, two hundred seventy".