322400253 has 24 divisors (see below), whose sum is σ = 500852160. Its totient is φ = 183933120.

The previous prime is 322400237. The next prime is 322400297. The reversal of 322400253 is 352004223.

It is not a de Polignac number, because 322400253 - 2⁴ = 322400237 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (322400233) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 117568 + ... + 120278.

It is an arithmetic number, because the mean of its divisors is an integer number (20868840).

Almost surely, 2^322400253 is an apocalyptic number.

It is an amenable number.

322400253 is a deficient number, since it is larger than the sum of its proper divisors (178451907).

322400253 is a wasteful number, since it uses less digits than its factorization.

322400253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3537 (or 3530 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 322400253 is about 17955.5075951642. The cubic root of 322400253 is about 685.6962767654.

Adding to 322400253 its reverse (352004223), we get a palindrome (674404476).

The spelling of 322400253 in words is "three hundred twenty-two million, four hundred thousand, two hundred fifty-three".