51566495 has 16 divisors (see below), whose sum is σ = 64260000. Its totient is φ = 39677568.

The previous prime is 51566477. The next prime is 51566507. The reversal of 51566495 is 59466515.

It is not a de Polignac number, because 51566495 - 2⁸ = 51566239 is a prime.

It is a congruent number.

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, 50096 + ... + 51114.

It is an arithmetic number, because the mean of its divisors is an integer number (4016250).

Almost surely, 2^51566495 is an apocalyptic number.

51566495 is a deficient number, since it is larger than the sum of its proper divisors (12693505).

51566495 is a wasteful number, since it uses less digits than its factorization.

51566495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1402.

The product of its digits is 162000, while the sum is 41.

The square root of 51566495 is about 7180.9814788788. The cubic root of 51566495 is about 372.2110005610.

The spelling of 51566495 in words is "fifty-one million, five hundred sixty-six thousand, four hundred ninety-five".