51564351 has 16 divisors (see below), whose sum is σ = 69759360. Its totient is φ = 33876960.

The previous prime is 51564323. The next prime is 51564361. The reversal of 51564351 is 15346515.

It is not a de Polignac number, because 51564351 - 2⁵ = 51564319 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51564301) 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, 69981 + ... + 70713.

It is an arithmetic number, because the mean of its divisors is an integer number (4359960).

Almost surely, 2^51564351 is an apocalyptic number.

51564351 is a deficient number, since it is larger than the sum of its proper divisors (18195009).

51564351 is a wasteful number, since it uses less digits than its factorization.

51564351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046.

The product of its digits is 9000, while the sum is 30.

The square root of 51564351 is about 7180.8321941123. The cubic root of 51564351 is about 372.2058419695.

It can be divided in two parts, 51564 and 351, that added together give a palindrome (51915).

The spelling of 51564351 in words is "fifty-one million, five hundred sixty-four thousand, three hundred fifty-one".