51906772 has 12 divisors (see below), whose sum is σ = 93767296. Its totient is φ = 25116120.

The previous prime is 51906707. The next prime is 51906787. The reversal of 51906772 is 27760915.

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, 209178 + ... + 209425.

Almost surely, 2^51906772 is an apocalyptic number.

It is an amenable number.

51906772 is a deficient number, since it is larger than the sum of its proper divisors (41860524).

51906772 is a wasteful number, since it uses less digits than its factorization.

51906772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418638 (or 418636 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 37.

The square root of 51906772 is about 7204.6354522627. The cubic root of 51906772 is about 373.0279216353.

The spelling of 51906772 in words is "fifty-one million, nine hundred six thousand, seven hundred seventy-two".