215193145 has 16 divisors (see below), whose sum is σ = 272448000. Its totient is φ = 162718848.

The previous prime is 215193127. The next prime is 215193163. The reversal of 215193145 is 541391512.

It is an interprime number because it is at equal distance from previous prime (215193127) and next prime (215193163).

It is a cyclic number.

It is not a de Polignac number, because 215193145 - 2¹³ = 215184953 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, 43141 + ... + 47869.

It is an arithmetic number, because the mean of its divisors is an integer number (17028000).

Almost surely, 2^215193145 is an apocalyptic number.

It is an amenable number.

215193145 is a deficient number, since it is larger than the sum of its proper divisors (57254855).

215193145 is a wasteful number, since it uses less digits than its factorization.

215193145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5232.

The product of its digits is 5400, while the sum is 31.

The square root of 215193145 is about 14669.4630099401. The cubic root of 215193145 is about 599.2519798677.

The spelling of 215193145 in words is "two hundred fifteen million, one hundred ninety-three thousand, one hundred forty-five".