215164552 has 32 divisors (see below), whose sum is σ = 421505280. Its totient is φ = 102847680.

The previous prime is 215164541. The next prime is 215164553. The reversal of 215164552 is 255461512.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (215164553) 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, 15358 + ... + 25810.

It is an arithmetic number, because the mean of its divisors is an integer number (13172040).

Almost surely, 2^215164552 is an apocalyptic number.

It is an amenable number.

215164552 is a deficient number, since it is larger than the sum of its proper divisors (206340728).

215164552 is a wasteful number, since it uses less digits than its factorization.

215164552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10573 (or 10569 counting only the distinct ones).

The product of its digits is 12000, while the sum is 31.

The square root of 215164552 is about 14668.4884020133. The cubic root of 215164552 is about 599.2254375557.

The spelling of 215164552 in words is "two hundred fifteen million, one hundred sixty-four thousand, five hundred fifty-two".