51131526 has 16 divisors (see below), whose sum is σ = 102345984. Its totient is φ = 17030024.

The previous prime is 51131501. The next prime is 51131537. The reversal of 51131526 is 62513115.

It is a super-2 number, since 2×51131526² = 5228865902177352, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 51131496 and 51131505.

It is a congruent number.

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, 6991 + ... + 12293.

It is an arithmetic number, because the mean of its divisors is an integer number (6396624).

Almost surely, 2^51131526 is an apocalyptic number.

51131526 is an abundant number, since it is smaller than the sum of its proper divisors (51214458).

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

51131526 is a wasteful number, since it uses less digits than its factorization.

51131526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6915.

The product of its digits is 900, while the sum is 24.

The square root of 51131526 is about 7150.6311609536. The cubic root of 51131526 is about 371.1614973426.

The spelling of 51131526 in words is "fifty-one million, one hundred thirty-one thousand, five hundred twenty-six".