51114012520 has 32 divisors (see below), whose sum is σ = 115022125800. Its totient is φ = 20442832128.

The previous prime is 51114012497. The next prime is 51114012541. The reversal of 51114012520 is 2521041115.

It can be written as a sum of positive squares in 4 ways, for example, as 40446840996 + 10667171524 = 201114^2 + 103282^2 .

It is a super-2 number, since 2×51114012520² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51114012491 and 51114012500.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225886 + ... + 391474.

Almost surely, 2^51114012520 is an apocalyptic number.

It is an amenable number.

51114012520 is an abundant number, since it is smaller than the sum of its proper divisors (63908113280).

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

51114012520 is a wasteful number, since it uses less digits than its factorization.

51114012520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173317 (or 173313 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 22.

Adding to 51114012520 its reverse (2521041115), we get a palindrome (53635053635).

The spelling of 51114012520 in words is "fifty-one billion, one hundred fourteen million, twelve thousand, five hundred twenty".