50720864 has 12 divisors (see below), whose sum is σ = 99856764. Its totient is φ = 25360416.

The previous prime is 50720837. The next prime is 50720869. The reversal of 50720864 is 46802705.

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 1585027 = 50720864 / (5 + 0 + 7 + 2 + 0 + 8 + 6 + 4).

It is a self number, because there is not a number n which added to its sum of digits gives 50720864.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50720869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 792482 + ... + 792545.

It is an arithmetic number, because the mean of its divisors is an integer number (8321397).

Almost surely, 2^50720864 is an apocalyptic number.

It is an amenable number.

50720864 is a deficient number, since it is larger than the sum of its proper divisors (49135900).

50720864 is a wasteful number, since it uses less digits than its factorization.

50720864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1585037 (or 1585029 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 50720864 is about 7121.8581844909. The cubic root of 50720864 is about 370.1651660942.

The spelling of 50720864 in words is "fifty million, seven hundred twenty thousand, eight hundred sixty-four".