8520957 has 20 divisors (see below), whose sum is σ = 12951840. Its totient is φ = 5581224.

The previous prime is 8520947. The next prime is 8520973. The reversal of 8520957 is 7590258.

It is not a de Polignac number, because 8520957 - 2⁷ = 8520829 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8520947) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3888 + ... + 5670.

It is an arithmetic number, because the mean of its divisors is an integer number (647592).

Almost surely, 2^8520957 is an apocalyptic number.

It is an amenable number.

8520957 is a deficient number, since it is larger than the sum of its proper divisors (4430883).

8520957 is a wasteful number, since it uses less digits than its factorization.

8520957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1854 (or 1845 counting only the distinct ones).

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

The square root of 8520957 is about 2919.0678306610. The cubic root of 8520957 is about 204.2503414532.

The spelling of 8520957 in words is "eight million, five hundred twenty thousand, nine hundred fifty-seven".