51313626 has 48 divisors (see below), whose sum is σ = 136840704. Its totient is φ = 13532832.

The previous prime is 51313609. The next prime is 51313631. The reversal of 51313626 is 62631315.

51313626 is a `hidden beast` number, since 5 + 1 + 31 + 3 + 626 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 51313626.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14026 + ... + 17301.

It is an arithmetic number, because the mean of its divisors is an integer number (2850848).

Almost surely, 2^51313626 is an apocalyptic number.

51313626 is an abundant number, since it is smaller than the sum of its proper divisors (85527078).

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

51313626 is a wasteful number, since it uses less digits than its factorization.

51313626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31355 (or 31352 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

The square root of 51313626 is about 7163.3529858579. The cubic root of 51313626 is about 371.6015939306.

The spelling of 51313626 in words is "fifty-one million, three hundred thirteen thousand, six hundred twenty-six".