1555020552 has 16 divisors (see below), whose sum is σ = 3887551440. Its totient is φ = 518340176.

The previous prime is 1555020529. The next prime is 1555020557. The reversal of 1555020552 is 2550205551.

It is not an unprimeable number, because it can be changed into a prime (1555020557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32396238 + ... + 32396285.

It is an arithmetic number, because the mean of its divisors is an integer number (242971965).

Almost surely, 2^1555020552 is an apocalyptic number.

1555020552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1555020552 is an abundant number, since it is smaller than the sum of its proper divisors (2332530888).

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

1555020552 is a wasteful number, since it uses less digits than its factorization.

1555020552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64792532 (or 64792528 counting only the distinct ones).

The product of its (nonzero) digits is 12500, while the sum is 30.

The square root of 1555020552 is about 39433.7488960915. The cubic root of 1555020552 is about 1158.5426983058.

The spelling of 1555020552 in words is "one billion, five hundred fifty-five million, twenty thousand, five hundred fifty-two".