51315426 has 48 divisors (see below), whose sum is σ = 114738624. Its totient is φ = 16565472.

The previous prime is 51315403. The next prime is 51315431. The reversal of 51315426 is 62451315.

It is a super-2 number, since 2×51315426² = 5266545891122952, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51315426.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 129060 + ... + 129456.

It is an arithmetic number, because the mean of its divisors is an integer number (2390388).

Almost surely, 2^51315426 is an apocalyptic number.

51315426 is an abundant number, since it is smaller than the sum of its proper divisors (63423198).

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

51315426 is a wasteful number, since it uses less digits than its factorization.

51315426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615 (or 612 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 51315426 is about 7163.4786242440. The cubic root of 51315426 is about 371.6059389431.

The spelling of 51315426 in words is "fifty-one million, three hundred fifteen thousand, four hundred twenty-six".