1557484445 has 48 divisors (see below), whose sum is σ = 2150064000. Its totient is φ = 1074015360.

The previous prime is 1557484429. The next prime is 1557484457. The reversal of 1557484445 is 5444847551.

It is not a de Polignac number, because 1557484445 - 2⁴ = 1557484429 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1557484445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5789771 + ... + 5790039.

It is an arithmetic number, because the mean of its divisors is an integer number (44793000).

Almost surely, 2^1557484445 is an apocalyptic number.

It is an amenable number.

1557484445 is a deficient number, since it is larger than the sum of its proper divisors (592579555).

1557484445 is a wasteful number, since it uses less digits than its factorization.

1557484445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530 (or 507 counting only the distinct ones).

The product of its digits is 1792000, while the sum is 47.

The square root of 1557484445 is about 39464.9774483655. The cubic root of 1557484445 is about 1159.1542698429.

The spelling of 1557484445 in words is "one billion, five hundred fifty-seven million, four hundred eighty-four thousand, four hundred forty-five".