51656526 has 12 divisors (see below), whose sum is σ = 111922512. Its totient is φ = 17218836.

The previous prime is 51656519. The next prime is 51656533. The reversal of 51656526 is 62565615.

It is a happy number.

51656526 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51656519) and next prime (51656533).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1434886 + ... + 1434921.

It is an arithmetic number, because the mean of its divisors is an integer number (9326876).

Almost surely, 2^51656526 is an apocalyptic number.

51656526 is an abundant number, since it is smaller than the sum of its proper divisors (60265986).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51656526 is a wasteful number, since it uses less digits than its factorization.

51656526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2869815 (or 2869812 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The square root of 51656526 is about 7187.2474564328. The cubic root of 51656526 is about 372.4274915548.

The spelling of 51656526 in words is "fifty-one million, six hundred fifty-six thousand, five hundred twenty-six".