1557481552 has 40 divisors (see below), whose sum is σ = 3380935392. Its totient is φ = 688809600.

The previous prime is 1557481507. The next prime is 1557481553. The reversal of 1557481552 is 2551847551.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1557481499 and 1557481508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1557481553) by changing a digit.

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, 113074 + ... + 126097.

Almost surely, 2^1557481552 is an apocalyptic number.

It is an amenable number.

1557481552 is an abundant number, since it is smaller than the sum of its proper divisors (1823453840).

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

1557481552 is a wasteful number, since it uses less digits than its factorization.

1557481552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239227 (or 239221 counting only the distinct ones).

The product of its digits is 280000, while the sum is 43.

The square root of 1557481552 is about 39464.9407955973. The cubic root of 1557481552 is about 1159.1535521396.

The spelling of 1557481552 in words is "one billion, five hundred fifty-seven million, four hundred eighty-one thousand, five hundred fifty-two".