1555505252 has 12 divisors (see below), whose sum is σ = 3111010560. Its totient is φ = 666645096.

The previous prime is 1555505207. The next prime is 1555505257. The reversal of 1555505252 is 2525055551.

1555505252 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1555505257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27776852 + ... + 27776907.

It is an arithmetic number, because the mean of its divisors is an integer number (259250880).

Almost surely, 2^1555505252 is an apocalyptic number.

It is an amenable number.

1555505252 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1555505252 is a wasteful number, since it uses less digits than its factorization.

1555505252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55553770 (or 55553768 counting only the distinct ones).

The product of its (nonzero) digits is 62500, while the sum is 35.

The square root of 1555505252 is about 39439.8941682150. The cubic root of 1555505252 is about 1158.6630584109.

The spelling of 1555505252 in words is "one billion, five hundred fifty-five million, five hundred five thousand, two hundred fifty-two".