1553220252 has 24 divisors (see below), whose sum is σ = 4026867600. Its totient is φ = 517740048.

The previous prime is 1553220241. The next prime is 1553220271. The reversal of 1553220252 is 2520223551.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7190727 + ... + 7190942.

It is an arithmetic number, because the mean of its divisors is an integer number (167786150).

Almost surely, 2^1553220252 is an apocalyptic number.

1553220252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1553220252 is an abundant number, since it is smaller than the sum of its proper divisors (2473647348).

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

1553220252 is a wasteful number, since it uses less digits than its factorization.

1553220252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14381682 (or 14381674 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 1553220252 is about 39410.9153915511. The cubic root of 1553220252 is about 1158.0954309390.

The spelling of 1553220252 in words is "one billion, five hundred fifty-three million, two hundred twenty thousand, two hundred fifty-two".