215253364 has 6 divisors (see below), whose sum is σ = 376693394. Its totient is φ = 107626680.

The previous prime is 215253331. The next prime is 215253391. The reversal of 215253364 is 463352512.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 151093264 + 64160100 = 12292^2 + 8010^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26906667 + ... + 26906674.

Almost surely, 2^215253364 is an apocalyptic number.

It is an amenable number.

215253364 is a deficient number, since it is larger than the sum of its proper divisors (161440030).

215253364 is a wasteful number, since it uses less digits than its factorization.

215253364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53813345 (or 53813343 counting only the distinct ones).

The product of its digits is 21600, while the sum is 31.

The square root of 215253364 is about 14671.5153954866. The cubic root of 215253364 is about 599.3078722761.

The spelling of 215253364 in words is "two hundred fifteen million, two hundred fifty-three thousand, three hundred sixty-four".