215551082 has 8 divisors (see below), whose sum is σ = 323446500. Its totient is φ = 107735584.

The previous prime is 215551081. The next prime is 215551099. The reversal of 215551082 is 280155512.

It can be written as a sum of positive squares in 2 ways, for example, as 215531761 + 19321 = 14681^2 + 139^2 .

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

It is not an unprimeable number, because it can be changed into a prime (215551081) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 12707 + ... + 24342.

Almost surely, 2^215551082 is an apocalyptic number.

215551082 is a deficient number, since it is larger than the sum of its proper divisors (107895418).

215551082 is a wasteful number, since it uses less digits than its factorization.

215551082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39960.

The product of its (nonzero) digits is 4000, while the sum is 29.

The square root of 215551082 is about 14681.6580126360. The cubic root of 215551082 is about 599.5840468902.

The spelling of 215551082 in words is "two hundred fifteen million, five hundred fifty-one thousand, eighty-two".