51056230520 has 16 divisors (see below), whose sum is σ = 114876518760. Its totient is φ = 20422492192.

The previous prime is 51056230451. The next prime is 51056230523. The reversal of 51056230520 is 2503265015.

It is a happy number.

It is a super-2 number, since 2×51056230520² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51056230523) 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, 638202842 + ... + 638202921.

Almost surely, 2^51056230520 is an apocalyptic number.

It is an amenable number.

51056230520 is an abundant number, since it is smaller than the sum of its proper divisors (63820288240).

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

51056230520 is a wasteful number, since it uses less digits than its factorization.

51056230520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276405774 (or 1276405770 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 29.

Adding to 51056230520 its reverse (2503265015), we get a palindrome (53559495535).

The spelling of 51056230520 in words is "fifty-one billion, fifty-six million, two hundred thirty thousand, five hundred twenty".