215054144 has 28 divisors (see below), whose sum is σ = 427597824. Its totient is φ = 107313024.

The previous prime is 215054087. The next prime is 215054153. The reversal of 215054144 is 441450512.

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 3 ways as a sum of consecutive naturals, for example, 31937 + ... + 38079.

Almost surely, 2^215054144 is an apocalyptic number.

It is an amenable number.

215054144 is a deficient number, since it is larger than the sum of its proper divisors (212543680).

215054144 is an equidigital number, since it uses as much as digits as its factorization.

215054144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6702 (or 6692 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 215054144 is about 14664.7244774663. The cubic root of 215054144 is about 599.1229259339.

The spelling of 215054144 in words is "two hundred fifteen million, fifty-four thousand, one hundred forty-four".