404242553 has 32 divisors (see below), whose sum is σ = 485490432. Its totient is φ = 331776000.

The previous prime is 404242529. The next prime is 404242561. The reversal of 404242553 is 355242404.

It is a cyclic number.

It is not a de Polignac number, because 404242553 - 2²⁸ = 135807097 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (404245553) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2094425 + ... + 2094617.

It is an arithmetic number, because the mean of its divisors is an integer number (15171576).

Almost surely, 2^404242553 is an apocalyptic number.

It is an amenable number.

404242553 is a deficient number, since it is larger than the sum of its proper divisors (81247879).

404242553 is a wasteful number, since it uses less digits than its factorization.

404242553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465.

The product of its (nonzero) digits is 19200, while the sum is 29.

The square root of 404242553 is about 20105.7840682725. The cubic root of 404242553 is about 739.4020937313.

Adding to 404242553 its reverse (355242404), we get a palindrome (759484957).

The spelling of 404242553 in words is "four hundred four million, two hundred forty-two thousand, five hundred fifty-three".