51927505 has 12 divisors (see below), whose sum is σ = 72486900. Its totient is φ = 35607264.

The previous prime is 51927497. The next prime is 51927517. The reversal of 51927505 is 50572915.

It can be written as a sum of positive squares in 2 ways, for example, as 29203216 + 22724289 = 5404^2 + 4767^2 .

It is not a de Polignac number, because 51927505 - 2³ = 51927497 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105730 + ... + 106219.

It is an arithmetic number, because the mean of its divisors is an integer number (6040575).

Almost surely, 2^51927505 is an apocalyptic number.

It is an amenable number.

51927505 is a deficient number, since it is larger than the sum of its proper divisors (20559395).

51927505 is a wasteful number, since it uses less digits than its factorization.

51927505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211968 (or 211961 counting only the distinct ones).

The product of its (nonzero) digits is 15750, while the sum is 34.

The square root of 51927505 is about 7206.0741739174. The cubic root of 51927505 is about 373.0775809129.

The spelling of 51927505 in words is "fifty-one million, nine hundred twenty-seven thousand, five hundred five".