51532479 has 12 divisors (see below), whose sum is σ = 74566336. Its totient is φ = 34294752.

The previous prime is 51532469. The next prime is 51532487. The reversal of 51532479 is 97423515.

51532479 is a `hidden beast` number, since 51 + 532 + 4 + 79 = 666.

It is not a de Polignac number, because 51532479 - 2²¹ = 49435327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51532469) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 747 + ... + 10179.

Almost surely, 2^51532479 is an apocalyptic number.

51532479 is a deficient number, since it is larger than the sum of its proper divisors (23033857).

51532479 is a wasteful number, since it uses less digits than its factorization.

51532479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10046 (or 10043 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 51532479 is about 7178.6126096900. The cubic root of 51532479 is about 372.1291391741.

The spelling of 51532479 in words is "fifty-one million, five hundred thirty-two thousand, four hundred seventy-nine".