215253969 has 8 divisors (see below), whose sum is σ = 328006080. Its totient is φ = 123002256.

The previous prime is 215253959. The next prime is 215253991. The reversal of 215253969 is 969352512.

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

It is not a de Polignac number, because 215253969 - 2⁴ = 215253953 is a prime.

It is a super-2 number, since 2×215253969² = 92668542340505922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 215253969.

It is not an unprimeable number, because it can be changed into a prime (215253919) 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 7 ways as a sum of consecutive naturals, for example, 5125074 + ... + 5125115.

It is an arithmetic number, because the mean of its divisors is an integer number (41000760).

Almost surely, 2^215253969 is an apocalyptic number.

It is an amenable number.

215253969 is a deficient number, since it is larger than the sum of its proper divisors (112752111).

215253969 is a wasteful number, since it uses less digits than its factorization.

215253969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10250199.

The product of its digits is 145800, while the sum is 42.

The square root of 215253969 is about 14671.5360136558. The cubic root of 215253969 is about 599.3084337554.

The spelling of 215253969 in words is "two hundred fifteen million, two hundred fifty-three thousand, nine hundred sixty-nine".