51704765 has 16 divisors (see below), whose sum is σ = 71230080. Its totient is φ = 35294400.

The previous prime is 51704761. The next prime is 51704773. The reversal of 51704765 is 56740715.

It is not a de Polignac number, because 51704765 - 2² = 51704761 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51704761) 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, 4790 + ... + 11240.

It is an arithmetic number, because the mean of its divisors is an integer number (4451880).

Almost surely, 2^51704765 is an apocalyptic number.

It is an amenable number.

51704765 is a deficient number, since it is larger than the sum of its proper divisors (19525315).

51704765 is a wasteful number, since it uses less digits than its factorization.

51704765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6692.

The product of its (nonzero) digits is 29400, while the sum is 35.

The square root of 51704765 is about 7190.6025477702. The cubic root of 51704765 is about 372.5433848842.

The spelling of 51704765 in words is "fifty-one million, seven hundred four thousand, seven hundred sixty-five".