553156440 has 128 divisors (see below), whose sum is σ = 1791590400. Its totient is φ = 136209920.

The previous prime is 553156433. The next prime is 553156451. The reversal of 553156440 is 44651355.

It is a super-2 number, since 2×553156440² = 611964094226947200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76585 + ... + 83495.

It is an arithmetic number, because the mean of its divisors is an integer number (13996800).

Almost surely, 2^553156440 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 553156440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (895795200).

553156440 is an abundant number, since it is smaller than the sum of its proper divisors (1238433960).

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

553156440 is a wasteful number, since it uses less digits than its factorization.

553156440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6977 (or 6973 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 33.

The square root of 553156440 is about 23519.2780501443. The cubic root of 553156440 is about 820.8856384053.

The spelling of 553156440 in words is "five hundred fifty-three million, one hundred fifty-six thousand, four hundred forty".