50631920 has 40 divisors (see below), whose sum is σ = 118050480. Its totient is φ = 20195840.

The previous prime is 50631913. The next prime is 50631923. The reversal of 50631920 is 2913605.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 50631920.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50631923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38636 + ... + 39924.

It is an arithmetic number, because the mean of its divisors is an integer number (2951262).

Almost surely, 2^50631920 is an apocalyptic number.

It is an amenable number.

50631920 is an abundant number, since it is smaller than the sum of its proper divisors (67418560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

50631920 is a wasteful number, since it uses less digits than its factorization.

50631920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1793 (or 1787 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 50631920 is about 7115.6110067934. The cubic root of 50631920 is about 369.9486658755.

The spelling of 50631920 in words is "fifty million, six hundred thirty-one thousand, nine hundred twenty".