51612156 has 36 divisors (see below), whose sum is σ = 130694200. Its totient is φ = 17173728.

The previous prime is 51612149. The next prime is 51612163. The reversal of 51612156 is 65121615.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (51612149) and next prime (51612163).

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30090 + ... + 31758.

Almost surely, 2^51612156 is an apocalyptic number.

It is an amenable number.

51612156 is an abundant number, since it is smaller than the sum of its proper divisors (79082044).

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

51612156 is a wasteful number, since it uses less digits than its factorization.

51612156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2538 (or 2533 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 51612156 is about 7184.1600761676. The cubic root of 51612156 is about 372.3208297086.

It can be divided in two parts, 5 and 1612156, that added together give a palindrome (1612161).

The spelling of 51612156 in words is "fifty-one million, six hundred twelve thousand, one hundred fifty-six".