215551230 has 16 divisors (see below), whose sum is σ = 517323024. Its totient is φ = 57480320.

The previous prime is 215551157. The next prime is 215551241. The reversal of 215551230 is 32155512.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 215551230.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3592491 + ... + 3592550.

It is an arithmetic number, because the mean of its divisors is an integer number (32332689).

Almost surely, 2^215551230 is an apocalyptic number.

215551230 is an abundant number, since it is smaller than the sum of its proper divisors (301771794).

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

215551230 is a wasteful number, since it uses less digits than its factorization.

215551230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7185051.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 215551230 is about 14681.6630529378. The cubic root of 215551230 is about 599.5841841174.

The spelling of 215551230 in words is "two hundred fifteen million, five hundred fifty-one thousand, two hundred thirty".