215032550 has 24 divisors (see below), whose sum is σ = 403708536. Its totient is φ = 85207040.

The previous prime is 215032537. The next prime is 215032561. The reversal of 215032550 is 55230512.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14747 + ... + 25446.

It is an arithmetic number, because the mean of its divisors is an integer number (16821189).

Almost surely, 2^215032550 is an apocalyptic number.

215032550 is a deficient number, since it is larger than the sum of its proper divisors (188675986).

215032550 is a wasteful number, since it uses less digits than its factorization.

215032550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40312 (or 40307 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 215032550 is about 14663.9882023957. The cubic root of 215032550 is about 599.1028722345.

The spelling of 215032550 in words is "two hundred fifteen million, thirty-two thousand, five hundred fifty".