501001056 has 36 divisors (see below), whose sum is σ = 1424722572. Its totient is φ = 167000256.

The previous prime is 501001049. The next prime is 501001073. The reversal of 501001056 is 650100105.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×501001056² = 502004116226230272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 869506 + ... + 870081.

It is an arithmetic number, because the mean of its divisors is an integer number (39575627).

Almost surely, 2^501001056 is an apocalyptic number.

It is an amenable number.

501001056 is an abundant number, since it is smaller than the sum of its proper divisors (923721516).

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

501001056 is a wasteful number, since it uses less digits than its factorization.

501001056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1739603 (or 1739592 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 501001056 is about 22383.0528748873. The cubic root of 501001056 is about 794.2298653247.

The spelling of 501001056 in words is "five hundred one million, one thousand, fifty-six".