215399045 has 8 divisors (see below), whose sum is σ = 259639296. Its totient is φ = 171545616.

The previous prime is 215399039. The next prime is 215399053. The reversal of 215399045 is 540993512.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-215399045 is a prime.

It is a Duffinian number.

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, 95477 + ... + 97706.

It is an arithmetic number, because the mean of its divisors is an integer number (32454912).

Almost surely, 2^215399045 is an apocalyptic number.

It is an amenable number.

215399045 is a deficient number, since it is larger than the sum of its proper divisors (44240251).

215399045 is a wasteful number, since it uses less digits than its factorization.

215399045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193411.

The product of its (nonzero) digits is 48600, while the sum is 38.

The square root of 215399045 is about 14676.4793121511. The cubic root of 215399045 is about 599.4430433440.

The spelling of 215399045 in words is "two hundred fifteen million, three hundred ninety-nine thousand, forty-five".