891253 has 4 divisors (see below), whose sum is σ = 972288. Its totient is φ = 810220.

The previous prime is 891251. The next prime is 891277. The reversal of 891253 is 352198.

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 a cyclic number.

It is not a de Polignac number, because 891253 - 2¹ = 891251 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (891251) 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, 40501 + ... + 40522.

It is an arithmetic number, because the mean of its divisors is an integer number (243072).

2⁸⁹¹²⁵³ is an apocalyptic number.

It is an amenable number.

891253 is a deficient number, since it is larger than the sum of its proper divisors (81035).

891253 is a wasteful number, since it uses less digits than its factorization.

891253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81034.

The product of its digits is 2160, while the sum is 28.

The square root of 891253 is about 944.0619683050. The cubic root of 891253 is about 96.2351368515.

The spelling of 891253 in words is "eight hundred ninety-one thousand, two hundred fifty-three".