50640961 has 6 divisors (see below), whose sum is σ = 58908930. Its totient is φ = 43406496.

The previous prime is 50640959. The next prime is 50640979. The reversal of 50640961 is 16904605.

It can be written as a sum of positive squares in only one way, i.e., 49000000 + 1640961 = 7000^2 + 1281^2 .

It is not a de Polignac number, because 50640961 - 2¹ = 50640959 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50640661) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 516696 + ... + 516793.

It is an arithmetic number, because the mean of its divisors is an integer number (9818155).

Almost surely, 2^50640961 is an apocalyptic number.

It is an amenable number.

50640961 is a deficient number, since it is larger than the sum of its proper divisors (8267969).

50640961 is a wasteful number, since it uses less digits than its factorization.

50640961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033503 (or 1033496 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 50640961 is about 7116.2462717362. The cubic root of 50640961 is about 369.9706843099.

The spelling of 50640961 in words is "fifty million, six hundred forty thousand, nine hundred sixty-one".