321412553 has 16 divisors (see below), whose sum is σ = 405233280. Its totient is φ = 247632000.

The previous prime is 321412543. The next prime is 321412583. The reversal of 321412553 is 355214123.

It is a happy number.

It is not a de Polignac number, because 321412553 - 2⁴ = 321412537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321412513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16598 + ... + 30303.

It is an arithmetic number, because the mean of its divisors is an integer number (25327080).

Almost surely, 2^321412553 is an apocalyptic number.

It is an amenable number.

321412553 is a deficient number, since it is larger than the sum of its proper divisors (83820727).

321412553 is a wasteful number, since it uses less digits than its factorization.

321412553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47008.

The product of its digits is 3600, while the sum is 26.

The square root of 321412553 is about 17927.9824018209. The cubic root of 321412553 is about 684.9953312769.

Adding to 321412553 its reverse (355214123), we get a palindrome (676626676).

The spelling of 321412553 in words is "three hundred twenty-one million, four hundred twelve thousand, five hundred fifty-three".