215632049 has 4 divisors (see below), whose sum is σ = 215959920. Its totient is φ = 215304180.

The previous prime is 215632033. The next prime is 215632069. The reversal of 215632049 is 940236512.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 215632049 - 2⁴ = 215632033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215632009) 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, 162947 + ... + 164264.

It is an arithmetic number, because the mean of its divisors is an integer number (53989980).

Almost surely, 2^215632049 is an apocalyptic number.

It is an amenable number.

215632049 is a deficient number, since it is larger than the sum of its proper divisors (327871).

215632049 is an equidigital number, since it uses as much as digits as its factorization.

215632049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327870.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 215632049 is about 14684.4151739182. The cubic root of 215632049 is about 599.6591109908.

The spelling of 215632049 in words is "two hundred fifteen million, six hundred thirty-two thousand, forty-nine".