553431220 has 48 divisors (see below), whose sum is σ = 1202342400. Its totient is φ = 213759360.

The previous prime is 553431191. The next prime is 553431227. The reversal of 553431220 is 22134355.

It is a super-2 number, since 2×553431220² = 612572230541376800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (553431227) 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, 438951 + ... + 440209.

It is an arithmetic number, because the mean of its divisors is an integer number (25048800).

Almost surely, 2^553431220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 553431220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (601171200).

553431220 is an abundant number, since it is smaller than the sum of its proper divisors (648911180).

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

553431220 is a wasteful number, since it uses less digits than its factorization.

553431220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2008 (or 2006 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 553431220 is about 23525.1189157462. The cubic root of 553431220 is about 821.0215406566.

Adding to 553431220 its reverse (22134355), we get a palindrome (575565575).

The spelling of 553431220 in words is "five hundred fifty-three million, four hundred thirty-one thousand, two hundred twenty".