215506150 has 24 divisors (see below), whose sum is σ = 403545600. Its totient is φ = 85620960.

The previous prime is 215506133. The next prime is 215506169. The reversal of 215506150 is 51605512.

It is a Harshad number since it is a multiple of its sum of digits (25).

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, 7014 + ... + 21913.

It is an arithmetic number, because the mean of its divisors is an integer number (16814400).

Almost surely, 2^215506150 is an apocalyptic number.

215506150 is a deficient number, since it is larger than the sum of its proper divisors (188039450).

215506150 is a wasteful number, since it uses less digits than its factorization.

215506150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29088 (or 29083 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 215506150 is about 14680.1277242400. The cubic root of 215506150 is about 599.5423825473.

The spelling of 215506150 in words is "two hundred fifteen million, five hundred six thousand, one hundred fifty".