51532313 has 16 divisors (see below), whose sum is σ = 62929920. Its totient is φ = 41214096.

The previous prime is 51532301. The next prime is 51532331. The reversal of 51532313 is 31323515.

It is a de Polignac number, because none of the positive numbers 2^k-51532313 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51532343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6020 + ... + 11802.

It is an arithmetic number, because the mean of its divisors is an integer number (3933120).

Almost surely, 2^51532313 is an apocalyptic number.

It is an amenable number.

51532313 is a deficient number, since it is larger than the sum of its proper divisors (11397607).

51532313 is a wasteful number, since it uses less digits than its factorization.

51532313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5876.

The product of its digits is 1350, while the sum is 23.

The square root of 51532313 is about 7178.6010475579. The cubic root of 51532313 is about 372.1287395976.

Adding to 51532313 its reverse (31323515), we get a palindrome (82855828).

The spelling of 51532313 in words is "fifty-one million, five hundred thirty-two thousand, three hundred thirteen".