51961712 has 20 divisors (see below), whose sum is σ = 109828536. Its totient is φ = 23618880.

The previous prime is 51961709. The next prime is 51961729. The reversal of 51961712 is 21716915.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 147443 + ... + 147794.

Almost surely, 2^51961712 is an apocalyptic number.

It is an amenable number.

51961712 is an abundant number, since it is smaller than the sum of its proper divisors (57866824).

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

51961712 is a wasteful number, since it uses less digits than its factorization.

51961712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295256 (or 295250 counting only the distinct ones).

The product of its digits is 3780, while the sum is 32.

The square root of 51961712 is about 7208.4472669223. The cubic root of 51961712 is about 373.1594839658.

The spelling of 51961712 in words is "fifty-one million, nine hundred sixty-one thousand, seven hundred twelve".