50999972 has 12 divisors (see below), whose sum is σ = 89634636. Its totient is φ = 25390080.

The previous prime is 50999959. The next prime is 50999989. The reversal of 50999972 is 27999905.

It can be written as a sum of positive squares in 2 ways, for example, as 23290276 + 27709696 = 4826^2 + 5264^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 50999972.

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, 26429 + ... + 28292.

It is an arithmetic number, because the mean of its divisors is an integer number (7469553).

Almost surely, 2^50999972 is an apocalyptic number.

It is an amenable number.

50999972 is a deficient number, since it is larger than the sum of its proper divisors (38634664).

50999972 is a wasteful number, since it uses less digits than its factorization.

50999972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54958 (or 54956 counting only the distinct ones).

The product of its (nonzero) digits is 459270, while the sum is 50.

The square root of 50999972 is about 7141.4264681505. The cubic root of 50999972 is about 370.8429090599.

The spelling of 50999972 in words is "fifty million, nine hundred ninety-nine thousand, nine hundred seventy-two".