215452113 has 4 divisors (see below), whose sum is σ = 287269488. Its totient is φ = 143634740.

The previous prime is 215452103. The next prime is 215452123. The reversal of 215452113 is 311254512.

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 an interprime number because it is at equal distance from previous prime (215452103) and next prime (215452123).

It is a cyclic number.

It is not a de Polignac number, because 215452113 - 2⁹ = 215451601 is a prime.

It is a super-2 number, since 2×215452113² = 92839225992329538, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (215452103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35908683 + ... + 35908688.

It is an arithmetic number, because the mean of its divisors is an integer number (71817372).

Almost surely, 2^215452113 is an apocalyptic number.

It is an amenable number.

215452113 is a deficient number, since it is larger than the sum of its proper divisors (71817375).

215452113 is an equidigital number, since it uses as much as digits as its factorization.

215452113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71817374.

The product of its digits is 1200, while the sum is 24.

The square root of 215452113 is about 14678.2871275909. The cubic root of 215452113 is about 599.4922676899.

The spelling of 215452113 in words is "two hundred fifteen million, four hundred fifty-two thousand, one hundred thirteen".