51630556252 has 72 divisors (see below), whose sum is σ = 100797656960. Its totient is φ = 23120380800.

The previous prime is 51630556199. The next prime is 51630556253. The reversal of 51630556252 is 25265503615.

It is a happy number.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51630556253) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9546133 + ... + 9551539.

Almost surely, 2^51630556252 is an apocalyptic number.

It is an amenable number.

51630556252 is a deficient number, since it is larger than the sum of its proper divisors (49167100708).

51630556252 is a wasteful number, since it uses less digits than its factorization.

51630556252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5723 (or 5710 counting only the distinct ones).

The product of its (nonzero) digits is 270000, while the sum is 40.

The spelling of 51630556252 in words is "fifty-one billion, six hundred thirty million, five hundred fifty-six thousand, two hundred fifty-two".