1553320056 has 64 divisors (see below), whose sum is σ = 4127306400. Its totient is φ = 485470208.

The previous prime is 1553320009. The next prime is 1553320063. The reversal of 1553320056 is 6500233551.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102676 + ... + 116828.

Almost surely, 2^1553320056 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 1553320056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2063653200).

1553320056 is an abundant number, since it is smaller than the sum of its proper divisors (2573986344).

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

1553320056 is a wasteful number, since it uses less digits than its factorization.

1553320056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14448 (or 14444 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 30.

The square root of 1553320056 is about 39412.1815686470. The cubic root of 1553320056 is about 1158.1202353372.

The spelling of 1553320056 in words is "one billion, five hundred fifty-three million, three hundred twenty thousand, fifty-six".