50972640 has 96 divisors (see below), whose sum is σ = 162279936. Its totient is φ = 13447680.

The previous prime is 50972639. The next prime is 50972653. The reversal of 50972640 is 4627905.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48925 + ... + 49955.

It is an arithmetic number, because the mean of its divisors is an integer number (1690416).

Almost surely, 2^50972640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50972640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81139968).

50972640 is an abundant number, since it is smaller than the sum of its proper divisors (111307296).

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

50972640 is a wasteful number, since it uses less digits than its factorization.

50972640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1152 (or 1144 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 50972640 is about 7139.5125884055. The cubic root of 50972640 is about 370.7766496143.

The spelling of 50972640 in words is "fifty million, nine hundred seventy-two thousand, six hundred forty".