253397 has 4 divisors (see below), whose sum is σ = 255360. Its totient is φ = 251436.

The previous prime is 253387. The next prime is 253417. The reversal of 253397 is 793352.

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 253397 - 2⁴ = 253381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 253397.

It is not an unprimeable number, because it can be changed into a prime (253307) 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 3 ways as a sum of consecutive naturals, for example, 773 + ... + 1050.

It is an arithmetic number, because the mean of its divisors is an integer number (63840).

2²⁵³³⁹⁷ is an apocalyptic number.

It is an amenable number.

253397 is a deficient number, since it is larger than the sum of its proper divisors (1963).

253397 is a wasteful number, since it uses less digits than its factorization.

253397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1962.

The product of its digits is 5670, while the sum is 29.

The square root of 253397 is about 503.3855381316. The cubic root of 253397 is about 63.2800999283.

The spelling of 253397 in words is "two hundred fifty-three thousand, three hundred ninety-seven".