51556156 has 12 divisors (see below), whose sum is σ = 94146192. Its totient is φ = 24657248.

The previous prime is 51556129. The next prime is 51556159. The reversal of 51556156 is 65165515.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51556159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280105 + ... + 280288.

It is an arithmetic number, because the mean of its divisors is an integer number (7845516).

Almost surely, 2^51556156 is an apocalyptic number.

It is an amenable number.

51556156 is a deficient number, since it is larger than the sum of its proper divisors (42590036).

51556156 is a wasteful number, since it uses less digits than its factorization.

51556156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560420 (or 560418 counting only the distinct ones).

The product of its digits is 22500, while the sum is 34.

The square root of 51556156 is about 7180.2615551246. The cubic root of 51556156 is about 372.1861229943.

It can be divided in two parts, 5155 and 6156, that added together give a palindrome (11311).

The spelling of 51556156 in words is "fifty-one million, five hundred fifty-six thousand, one hundred fifty-six".