501137856 has 42 divisors (see below), whose sum is σ = 1436422832. Its totient is φ = 167045760.

The previous prime is 501137851. The next prime is 501137873. The reversal of 501137856 is 658731105.

It is a super-2 number, since 2×501137856² = 502278301432553472, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 501137856.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501137851) 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, 434440 + ... + 435591.

Almost surely, 2^501137856 is an apocalyptic number.

It is an amenable number.

501137856 is an abundant number, since it is smaller than the sum of its proper divisors (935284976).

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

501137856 is a wasteful number, since it uses less digits than its factorization.

501137856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870049 (or 870036 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 501137856 is about 22386.1085497234. The cubic root of 501137856 is about 794.3021477791.

The spelling of 501137856 in words is "five hundred one million, one hundred thirty-seven thousand, eight hundred fifty-six".