51764505 has 16 divisors (see below), whose sum is σ = 89194560. Its totient is φ = 25483968.

The previous prime is 51764497. The next prime is 51764533. The reversal of 51764505 is 50546715.

It is not a de Polignac number, because 51764505 - 2³ = 51764497 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132535 + ... + 132924.

It is an arithmetic number, because the mean of its divisors is an integer number (5574660).

Almost surely, 2^51764505 is an apocalyptic number.

It is an amenable number.

51764505 is a deficient number, since it is larger than the sum of its proper divisors (37430055).

51764505 is a wasteful number, since it uses less digits than its factorization.

51764505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265480.

The product of its (nonzero) digits is 21000, while the sum is 33.

The square root of 51764505 is about 7194.7553815262. The cubic root of 51764505 is about 372.6868092916.

The spelling of 51764505 in words is "fifty-one million, seven hundred sixty-four thousand, five hundred five".