51435564 has 24 divisors (see below), whose sum is σ = 120434160. Its totient is φ = 17085504.

The previous prime is 51435509. The next prime is 51435569. The reversal of 51435564 is 46553415.

It is not an unprimeable number, because it can be changed into a prime (51435569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3799 + ... + 10830.

It is an arithmetic number, because the mean of its divisors is an integer number (5018090).

Almost surely, 2^51435564 is an apocalyptic number.

It is an amenable number.

51435564 is an abundant number, since it is smaller than the sum of its proper divisors (68998596).

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

51435564 is a wasteful number, since it uses less digits than its factorization.

51435564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14929 (or 14927 counting only the distinct ones).

The product of its digits is 36000, while the sum is 33.

The square root of 51435564 is about 7171.8591731852. The cubic root of 51435564 is about 371.8957101570.

Adding to 51435564 its reverse (46553415), we get a palindrome (97988979).

The spelling of 51435564 in words is "fifty-one million, four hundred thirty-five thousand, five hundred sixty-four".