553955220 has 192 divisors, whose sum is σ = 2121315840. Its totient is φ = 116868096.

The previous prime is 553955219. The next prime is 553955261. The reversal of 553955220 is 22559355.

553955220 is a `hidden beast` number, since 55 + 39 + 552 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 43504 + ... + 54776.

It is an arithmetic number, because the mean of its divisors is an integer number (11048520).

Almost surely, 2^553955220 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 553955220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1060657920).

553955220 is an abundant number, since it is smaller than the sum of its proper divisors (1567360620).

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

553955220 is a wasteful number, since it uses less digits than its factorization.

553955220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11311 (or 11303 counting only the distinct ones).

The product of its (nonzero) digits is 67500, while the sum is 36.

The square root of 553955220 is about 23536.2533127089. The cubic root of 553955220 is about 821.2805789160.

The spelling of 553955220 in words is "five hundred fifty-three million, nine hundred fifty-five thousand, two hundred twenty".