50972649 has 64 divisors (see below), whose sum is σ = 91176960. Its totient is φ = 24572160.

The previous prime is 50972639. The next prime is 50972653. The reversal of 50972649 is 94627905.

It is not a de Polignac number, because 50972649 - 2⁷ = 50972521 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 50972649.

It is not an unprimeable number, because it can be changed into a prime (50972629) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 160639 + ... + 160955.

It is an arithmetic number, because the mean of its divisors is an integer number (1424640).

Almost surely, 2^50972649 is an apocalyptic number.

It is an amenable number.

50972649 is a deficient number, since it is larger than the sum of its proper divisors (40204311).

50972649 is a wasteful number, since it uses less digits than its factorization.

50972649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 50972649 is about 7139.5132187006. The cubic root of 50972649 is about 370.7766714364.

The spelling of 50972649 in words is "fifty million, nine hundred seventy-two thousand, six hundred forty-nine".