51555002432 has 28 divisors (see below), whose sum is σ = 102633450816. Its totient is φ = 25694605440.

The previous prime is 51555002431. The next prime is 51555002449. The reversal of 51555002432 is 23420055515.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (51555002431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1275188 + ... + 1314995.

Almost surely, 2^51555002432 is an apocalyptic number.

It is an amenable number.

51555002432 is a deficient number, since it is larger than the sum of its proper divisors (51078448384).

51555002432 is a wasteful number, since it uses less digits than its factorization.

51555002432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2590506 (or 2590496 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 32.

Adding to 51555002432 its reverse (23420055515), we get a palindrome (74975057947).

The spelling of 51555002432 in words is "fifty-one billion, five hundred fifty-five million, two thousand, four hundred thirty-two".