51656927 has 12 divisors (see below), whose sum is σ = 61227576. Its totient is φ = 43439760.

The previous prime is 51656909. The next prime is 51656947. The reversal of 51656927 is 72965615.

It is not a de Polignac number, because 51656927 - 2¹² = 51652831 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 (51656947) 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, 7349 + ... + 12542.

It is an arithmetic number, because the mean of its divisors is an integer number (5102298).

Almost surely, 2^51656927 is an apocalyptic number.

51656927 is a deficient number, since it is larger than the sum of its proper divisors (9570649).

51656927 is a wasteful number, since it uses less digits than its factorization.

51656927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19958 (or 19951 counting only the distinct ones).

The product of its digits is 113400, while the sum is 41.

The square root of 51656927 is about 7187.2753530110. The cubic root of 51656927 is about 372.4284552474.

The spelling of 51656927 in words is "fifty-one million, six hundred fifty-six thousand, nine hundred twenty-seven".