553220444 has 12 divisors (see below), whose sum is σ = 1106440944. Its totient is φ = 237094464.

The previous prime is 553220431. The next prime is 553220471. The reversal of 553220444 is 444022355.

553220444 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9878909 + ... + 9878964.

It is an arithmetic number, because the mean of its divisors is an integer number (92203412).

Almost surely, 2^553220444 is an apocalyptic number.

It is an amenable number.

553220444 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

553220444 is a wasteful number, since it uses less digits than its factorization.

553220444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19757884 (or 19757882 counting only the distinct ones).

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

The square root of 553220444 is about 23520.6386818045. The cubic root of 553220444 is about 820.9172978867.

Adding to 553220444 its reverse (444022355), we get a palindrome (997242799).

The spelling of 553220444 in words is "five hundred fifty-three million, two hundred twenty thousand, four hundred forty-four".