51156744 has 16 divisors (see below), whose sum is σ = 127891920. Its totient is φ = 17052240.

The previous prime is 51156737. The next prime is 51156751. The reversal of 51156744 is 44765115.

It is an interprime number because it is at equal distance from previous prime (51156737) and next prime (51156751).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1065742 + ... + 1065789.

It is an arithmetic number, because the mean of its divisors is an integer number (7993245).

Almost surely, 2^51156744 is an apocalyptic number.

It is an amenable number.

51156744 is an abundant number, since it is smaller than the sum of its proper divisors (76735176).

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

51156744 is a wasteful number, since it uses less digits than its factorization.

51156744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2131540 (or 2131536 counting only the distinct ones).

The product of its digits is 16800, while the sum is 33.

The square root of 51156744 is about 7152.3942844337. The cubic root of 51156744 is about 371.2225060980. Note that the first 3 decimals are identical.

The spelling of 51156744 in words is "fifty-one million, one hundred fifty-six thousand, seven hundred forty-four".