51705804 has 12 divisors (see below), whose sum is σ = 120646904. Its totient is φ = 17235264.

The previous prime is 51705791. The next prime is 51705809. The reversal of 51705804 is 40850715.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (51705809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2154397 + ... + 2154420.

Almost surely, 2^51705804 is an apocalyptic number.

It is an amenable number.

51705804 is an abundant number, since it is smaller than the sum of its proper divisors (68941100).

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

51705804 is a wasteful number, since it uses less digits than its factorization.

51705804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4308824 (or 4308822 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 51705804 is about 7190.6747944821. The cubic root of 51705804 is about 372.5458802698.

The spelling of 51705804 in words is "fifty-one million, seven hundred five thousand, eight hundred four".