1557157355 has 16 divisors (see below), whose sum is σ = 2017612800. Its totient is φ = 1146880128.

The previous prime is 1557157351. The next prime is 1557157361. The reversal of 1557157355 is 5537517551.

It is a cyclic number.

It is not a de Polignac number, because 1557157355 - 2² = 1557157351 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1557157351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6380 + ... + 56169.

It is an arithmetic number, because the mean of its divisors is an integer number (126100800).

Almost surely, 2^1557157355 is an apocalyptic number.

1557157355 is a deficient number, since it is larger than the sum of its proper divisors (460455445).

1557157355 is a wasteful number, since it uses less digits than its factorization.

1557157355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62950.

The product of its digits is 459375, while the sum is 44.

The square root of 1557157355 is about 39460.8331767083. The cubic root of 1557157355 is about 1159.0731188313.

The spelling of 1557157355 in words is "one billion, five hundred fifty-seven million, one hundred fifty-seven thousand, three hundred fifty-five".