51512255152 has 40 divisors (see below), whose sum is σ = 106349059296. Its totient is φ = 24086639616.

The previous prime is 51512255131. The next prime is 51512255153. The reversal of 51512255152 is 25155221515.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (51512255153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 560428 + ... + 645835.

Almost surely, 2^51512255152 is an apocalyptic number.

It is an amenable number.

51512255152 is an abundant number, since it is smaller than the sum of its proper divisors (54836804144).

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

51512255152 is a wasteful number, since it uses less digits than its factorization.

51512255152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1206445 (or 1206439 counting only the distinct ones).

The product of its digits is 25000, while the sum is 34.

Adding to 51512255152 its reverse (25155221515), we get a palindrome (76667476667).

The spelling of 51512255152 in words is "fifty-one billion, five hundred twelve million, two hundred fifty-five thousand, one hundred fifty-two".