8157522550 has 24 divisors (see below), whose sum is σ = 15323229072. Its totient is φ = 3230700000.

The previous prime is 8157522511. The next prime is 8157522589. The reversal of 8157522550 is 552257518.

It is an interprime number because it is at equal distance from previous prime (8157522511) and next prime (8157522589).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 802626 + ... + 812725.

It is an arithmetic number, because the mean of its divisors is an integer number (638467878).

Almost surely, 2^8157522550 is an apocalyptic number.

8157522550 is a deficient number, since it is larger than the sum of its proper divisors (7165706522).

8157522550 is a wasteful number, since it uses less digits than its factorization.

8157522550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1615464 (or 1615459 counting only the distinct ones).

The product of its (nonzero) digits is 140000, while the sum is 40.

The square root of 8157522550 is about 90319.0043678516. The cubic root of 8157522550 is about 2013.0416519748.

The spelling of 8157522550 in words is "eight billion, one hundred fifty-seven million, five hundred twenty-two thousand, five hundred fifty".