502157985 has 32 divisors (see below), whose sum is σ = 972248832. Its totient is φ = 216053760.

The previous prime is 502157983. The next prime is 502158001. The reversal of 502157985 is 589751205.

It is not a de Polignac number, because 502157985 - 2¹ = 502157983 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (502157983) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 138876 + ... + 142445.

It is an arithmetic number, because the mean of its divisors is an integer number (30382776).

Almost surely, 2^502157985 is an apocalyptic number.

It is an amenable number.

502157985 is a deficient number, since it is larger than the sum of its proper divisors (470090847).

502157985 is a wasteful number, since it uses less digits than its factorization.

502157985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281353.

The product of its (nonzero) digits is 126000, while the sum is 42.

The square root of 502157985 is about 22408.8818328805. The cubic root of 502157985 is about 794.8407497166.

The spelling of 502157985 in words is "five hundred two million, one hundred fifty-seven thousand, nine hundred eighty-five".