815253 has 8 divisors (see below), whose sum is σ = 1091616. Its totient is φ = 541200.

The previous prime is 815251. The next prime is 815257. The reversal of 815253 is 352518.

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

It is not a de Polignac number, because 815253 - 2¹ = 815251 is a prime.

815253 is a lucky number.

It is a zygodrome in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (815251) 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, 583 + ... + 1403.

It is an arithmetic number, because the mean of its divisors is an integer number (136452).

2⁸¹⁵²⁵³ is an apocalyptic number.

It is an amenable number.

815253 is a deficient number, since it is larger than the sum of its proper divisors (276363).

815253 is a wasteful number, since it uses less digits than its factorization.

815253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155.

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

The square root of 815253 is about 902.9136171307. The cubic root of 815253 is about 93.4180509140.

The spelling of 815253 in words is "eight hundred fifteen thousand, two hundred fifty-three".