501552139 has 48 divisors (see below), whose sum is σ = 631441440. Its totient is φ = 395366400.

The previous prime is 501552041. The next prime is 501552157. The reversal of 501552139 is 931255105.

It is a de Polignac number, because none of the positive numbers 2^k-501552139 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 501552139.

It is not an unprimeable number, because it can be changed into a prime (501552169) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1602247 + ... + 1602559.

It is an arithmetic number, because the mean of its divisors is an integer number (13155030).

Almost surely, 2^501552139 is an apocalyptic number.

501552139 is a deficient number, since it is larger than the sum of its proper divisors (129889301).

501552139 is a wasteful number, since it uses less digits than its factorization.

501552139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412 (or 401 counting only the distinct ones).

The product of its (nonzero) digits is 6750, while the sum is 31.

The square root of 501552139 is about 22395.3597649156. The cubic root of 501552139 is about 794.5209666373.

The spelling of 501552139 in words is "five hundred one million, five hundred fifty-two thousand, one hundred thirty-nine".