525984138 has 16 divisors (see below), whose sum is σ = 1168853760. Its totient is φ = 175328028.

The previous prime is 525984113. The next prime is 525984139. The reversal of 525984138 is 831489525.

525984138 is a `hidden beast` number, since 52 + 598 + 4 + 1 + 3 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 525984093 and 525984102.

It is not an unprimeable number, because it can be changed into a prime (525984139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4870170 + ... + 4870277.

It is an arithmetic number, because the mean of its divisors is an integer number (73053360).

Almost surely, 2^525984138 is an apocalyptic number.

525984138 is an abundant number, since it is smaller than the sum of its proper divisors (642869622).

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

525984138 is a wasteful number, since it uses less digits than its factorization.

525984138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9740458 (or 9740452 counting only the distinct ones).

The product of its digits is 345600, while the sum is 45.

The square root of 525984138 is about 22934.3440717192. The cubic root of 525984138 is about 807.2180834294.

The spelling of 525984138 in words is "five hundred twenty-five million, nine hundred eighty-four thousand, one hundred thirty-eight".