1557252552 has 16 divisors (see below), whose sum is σ = 3893131440. Its totient is φ = 519084176.

The previous prime is 1557252523. The next prime is 1557252583. The reversal of 1557252552 is 2552527551.

It is a self number, because there is not a number n which added to its sum of digits gives 1557252552.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32442738 + ... + 32442785.

It is an arithmetic number, because the mean of its divisors is an integer number (243320715).

Almost surely, 2^1557252552 is an apocalyptic number.

1557252552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1557252552 is an abundant number, since it is smaller than the sum of its proper divisors (2335878888).

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

1557252552 is a wasteful number, since it uses less digits than its factorization.

1557252552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64885532 (or 64885528 counting only the distinct ones).

The product of its digits is 175000, while the sum is 39.

The square root of 1557252552 is about 39462.0393796367. The cubic root of 1557252552 is about 1159.0967383742.

The spelling of 1557252552 in words is "one billion, five hundred fifty-seven million, two hundred fifty-two thousand, five hundred fifty-two".