215251253 has 8 divisors (see below), whose sum is σ = 254484480. Its totient is φ = 178138800.

The previous prime is 215251243. The next prime is 215251277. The reversal of 215251253 is 352152512.

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

It is not a de Polignac number, because 215251253 - 2¹⁸ = 214989109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215251243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 529973 + ... + 530378.

It is an arithmetic number, because the mean of its divisors is an integer number (31810560).

Almost surely, 2^215251253 is an apocalyptic number.

It is an amenable number.

215251253 is a deficient number, since it is larger than the sum of its proper divisors (39233227).

215251253 is a wasteful number, since it uses less digits than its factorization.

215251253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060387.

The product of its digits is 3000, while the sum is 26.

The square root of 215251253 is about 14671.4434531848. The cubic root of 215251253 is about 599.3059131227.

The spelling of 215251253 in words is "two hundred fifteen million, two hundred fifty-one thousand, two hundred fifty-three".