51555032252 has 24 divisors (see below), whose sum is σ = 95703151824. Its totient is φ = 24216820992.

The previous prime is 51555032227. The next prime is 51555032273. The reversal of 51555032252 is 25223055515.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 655823 + ... + 730214.

It is an arithmetic number, because the mean of its divisors is an integer number (3987631326).

Almost surely, 2^51555032252 is an apocalyptic number.

It is an amenable number.

51555032252 is a deficient number, since it is larger than the sum of its proper divisors (44148119572).

51555032252 is a wasteful number, since it uses less digits than its factorization.

51555032252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1386605 (or 1386603 counting only the distinct ones).

The product of its (nonzero) digits is 75000, while the sum is 35.

Adding to 51555032252 its reverse (25223055515), we get a palindrome (76778087767).

The spelling of 51555032252 in words is "fifty-one billion, five hundred fifty-five million, thirty-two thousand, two hundred fifty-two".