51632605 has 4 divisors (see below), whose sum is σ = 61959132. Its totient is φ = 41306080.

The previous prime is 51632599. The next prime is 51632627. The reversal of 51632605 is 50623615.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23020804 + 28611801 = 4798^2 + 5349^2 .

It is not a de Polignac number, because 51632605 - 2³ = 51632597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5163256 + ... + 5163265.

It is an arithmetic number, because the mean of its divisors is an integer number (15489783).

Almost surely, 2^51632605 is an apocalyptic number.

It is an amenable number.

51632605 is a deficient number, since it is larger than the sum of its proper divisors (10326527).

51632605 is a wasteful number, since it uses less digits than its factorization.

51632605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10326526.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 51632605 is about 7185.5831356961. The cubic root of 51632605 is about 372.3699950212.

The spelling of 51632605 in words is "fifty-one million, six hundred thirty-two thousand, six hundred five".