51956736 has 88 divisors (see below), whose sum is σ = 149250864. Its totient is φ = 15974400.

The previous prime is 51956699. The next prime is 51956741. The reversal of 51956736 is 63765915.

It is a happy number.

It is a zygodrome in base 2.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39286 + ... + 40586.

Almost surely, 2^51956736 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51956736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74625432).

51956736 is an abundant number, since it is smaller than the sum of its proper divisors (97294128).

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

51956736 is a wasteful number, since it uses less digits than its factorization.

51956736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337 (or 1319 counting only the distinct ones).

The product of its digits is 170100, while the sum is 42.

The square root of 51956736 is about 7208.1021080448. The cubic root of 51956736 is about 373.1475719842.

The spelling of 51956736 in words is "fifty-one million, nine hundred fifty-six thousand, seven hundred thirty-six".