51313738 has 8 divisors (see below), whose sum is σ = 87966432. Its totient is φ = 21991596.

The previous prime is 51313733. The next prime is 51313747. The reversal of 51313738 is 83731315.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (51313733) 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, 1832620 + ... + 1832647.

It is an arithmetic number, because the mean of its divisors is an integer number (10995804).

Almost surely, 2^51313738 is an apocalyptic number.

51313738 is a deficient number, since it is larger than the sum of its proper divisors (36652694).

51313738 is a wasteful number, since it uses less digits than its factorization.

51313738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3665276.

The product of its digits is 7560, while the sum is 31.

The square root of 51313738 is about 7163.3608034218. The cubic root of 51313738 is about 371.6018642899.

The spelling of 51313738 in words is "fifty-one million, three hundred thirteen thousand, seven hundred thirty-eight".