1557022245 has 16 divisors (see below), whose sum is σ = 2492199360. Its totient is φ = 830090624.

The previous prime is 1557022219. The next prime is 1557022253. The reversal of 1557022245 is 5422207551.

It is a cyclic number.

It is not a de Polignac number, because 1557022245 - 2⁸ = 1557021989 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22966 + ... + 60344.

It is an arithmetic number, because the mean of its divisors is an integer number (155762460).

Almost surely, 2^1557022245 is an apocalyptic number.

1557022245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1557022245 is a deficient number, since it is larger than the sum of its proper divisors (935177115).

1557022245 is a wasteful number, since it uses less digits than its factorization.

1557022245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40164.

The product of its (nonzero) digits is 28000, while the sum is 33.

The square root of 1557022245 is about 39459.1211888962. The cubic root of 1557022245 is about 1159.0395947308.

Adding to 1557022245 its reverse (5422207551), we get a palindrome (6979229796).

The spelling of 1557022245 in words is "one billion, five hundred fifty-seven million, twenty-two thousand, two hundred forty-five".