215525163 has 8 divisors (see below), whose sum is σ = 328419328. Its totient is φ = 123157224.

The previous prime is 215525161. The next prime is 215525231. The reversal of 215525163 is 361525512.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 215525163 - 2¹ = 215525161 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 215525163.

It is not an unprimeable number, because it can be changed into a prime (215525161) 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, 5131531 + ... + 5131572.

It is an arithmetic number, because the mean of its divisors is an integer number (41052416).

Almost surely, 2^215525163 is an apocalyptic number.

215525163 is a deficient number, since it is larger than the sum of its proper divisors (112894165).

215525163 is a wasteful number, since it uses less digits than its factorization.

215525163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10263113.

The product of its digits is 9000, while the sum is 30.

The square root of 215525163 is about 14680.7752860671. The cubic root of 215525163 is about 599.5600135432.

The spelling of 215525163 in words is "two hundred fifteen million, five hundred twenty-five thousand, one hundred sixty-three".