1557045504 has 360 divisors, whose sum is σ = 5627115648. Its totient is φ = 418037760.

The previous prime is 1557045473. The next prime is 1557045517. The reversal of 1557045504 is 4055407551.

It is a super-2 number, since 2×1557045504² = 4848781403053228032, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2467269 + ... + 2467899.

Almost surely, 2^1557045504 is an apocalyptic number.

1557045504 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1557045504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2813557824).

1557045504 is an abundant number, since it is smaller than the sum of its proper divisors (4070070144).

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

1557045504 is an equidigital number, since it uses as much as digits as its factorization.

1557045504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683 (or 660 counting only the distinct ones).

The product of its (nonzero) digits is 70000, while the sum is 36.

The square root of 1557045504 is about 39459.4159105276. The cubic root of 1557045504 is about 1159.0453659966.

The spelling of 1557045504 in words is "one billion, five hundred fifty-seven million, forty-five thousand, five hundred four".