215347145 has 16 divisors (see below), whose sum is σ = 278994240. Its totient is φ = 158625984.

The previous prime is 215347133. The next prime is 215347157. The reversal of 215347145 is 541743512.

It is an interprime number because it is at equal distance from previous prime (215347133) and next prime (215347157).

It is a cyclic number.

It is not a de Polignac number, because 215347145 - 2⁸ = 215346889 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23282 + ... + 31188.

It is an arithmetic number, because the mean of its divisors is an integer number (17437140).

Almost surely, 2^215347145 is an apocalyptic number.

It is an amenable number.

215347145 is a deficient number, since it is larger than the sum of its proper divisors (63647095).

215347145 is a wasteful number, since it uses less digits than its factorization.

215347145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8344.

The product of its digits is 16800, while the sum is 32.

The square root of 215347145 is about 14674.7110704095. The cubic root of 215347145 is about 599.3948945805.

The spelling of 215347145 in words is "two hundred fifteen million, three hundred forty-seven thousand, one hundred forty-five".