51604635 has 8 divisors (see below), whose sum is σ = 82567440. Its totient is φ = 27522464.

The previous prime is 51604621. The next prime is 51604661. The reversal of 51604635 is 53640615.

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

It is a cyclic number.

It is not a de Polignac number, because 51604635 - 2⁹ = 51604123 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1720140 + ... + 1720169.

It is an arithmetic number, because the mean of its divisors is an integer number (10320930).

Almost surely, 2^51604635 is an apocalyptic number.

51604635 is a deficient number, since it is larger than the sum of its proper divisors (30962805).

51604635 is a wasteful number, since it uses less digits than its factorization.

51604635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3440317.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 51604635 is about 7183.6366138607. The cubic root of 51604635 is about 372.3027437821.

The spelling of 51604635 in words is "fifty-one million, six hundred four thousand, six hundred thirty-five".