51772732 has 36 divisors (see below), whose sum is σ = 101384136. Its totient is φ = 22934080.

The previous prime is 51772717. The next prime is 51772733. The reversal of 51772732 is 23727715.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51772733) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 347394 + ... + 347542.

It is an arithmetic number, because the mean of its divisors is an integer number (2816226).

Almost surely, 2^51772732 is an apocalyptic number.

It is an amenable number.

51772732 is a deficient number, since it is larger than the sum of its proper divisors (49611404).

51772732 is a wasteful number, since it uses less digits than its factorization.

51772732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366 (or 215 counting only the distinct ones).

The product of its digits is 20580, while the sum is 34.

The square root of 51772732 is about 7195.3270947192. The cubic root of 51772732 is about 372.7065521119.

The spelling of 51772732 in words is "fifty-one million, seven hundred seventy-two thousand, seven hundred thirty-two".