215150550 has 24 divisors (see below), whose sum is σ = 533573736. Its totient is φ = 57373440.

The previous prime is 215150539. The next prime is 215150563. The reversal of 215150550 is 55051512.

It is a self number, because there is not a number n which added to its sum of digits gives 215150550.

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, 717019 + ... + 717318.

It is an arithmetic number, because the mean of its divisors is an integer number (22232239).

Almost surely, 2^215150550 is an apocalyptic number.

215150550 is an abundant number, since it is smaller than the sum of its proper divisors (318423186).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

215150550 is a wasteful number, since it uses less digits than its factorization.

215150550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1434352 (or 1434347 counting only the distinct ones).

The product of its (nonzero) digits is 1250, while the sum is 24.

The square root of 215150550 is about 14668.0111126219. The cubic root of 215150550 is about 599.2124389204.

The spelling of 215150550 in words is "two hundred fifteen million, one hundred fifty thousand, five hundred fifty".