1557040107 has 16 divisors (see below), whose sum is σ = 2383884032. Its totient is φ = 885517920.

The previous prime is 1557040103. The next prime is 1557040127. The reversal of 1557040107 is 7010407551.

It is not a de Polignac number, because 1557040107 - 2² = 1557040103 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1557040103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171268 + ... + 180129.

It is an arithmetic number, because the mean of its divisors is an integer number (148992752).

Almost surely, 2^1557040107 is an apocalyptic number.

1557040107 is a deficient number, since it is larger than the sum of its proper divisors (826843925).

1557040107 is a wasteful number, since it uses less digits than its factorization.

1557040107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351618.

The product of its (nonzero) digits is 4900, while the sum is 30.

The square root of 1557040107 is about 39459.3475237490. The cubic root of 1557040107 is about 1159.0440268418.

Adding to 1557040107 its reverse (7010407551), we get a palindrome (8567447658).

The spelling of 1557040107 in words is "one billion, five hundred fifty-seven million, forty thousand, one hundred seven".