1357173855 has 12 divisors (see below), whose sum is σ = 2352434760. Its totient is φ = 723826032.

The previous prime is 1357173827. The next prime is 1357173859. The reversal of 1357173855 is 5583717531.

1357173855 is a `hidden beast` number, since 1 + 3 + 571 + 73 + 8 + 5 + 5 = 666.

It is not a de Polignac number, because 1357173855 - 2⁵ = 1357173823 is a prime.

It is a super-2 number, since 2×1357173855² = 3683841745391122050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 30159419 = 1357173855 / (1 + 3 + 5 + 7 + 1 + 7 + 3 + 8 + 5 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 1357173855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1357173859) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15079665 + ... + 15079754.

It is an arithmetic number, because the mean of its divisors is an integer number (196036230).

Almost surely, 2^1357173855 is an apocalyptic number.

1357173855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1357173855 is a deficient number, since it is larger than the sum of its proper divisors (995260905).

1357173855 is a wasteful number, since it uses less digits than its factorization.

1357173855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30159430 (or 30159427 counting only the distinct ones).

The product of its digits is 441000, while the sum is 45.

The square root of 1357173855 is about 36839.8405941177. The cubic root of 1357173855 is about 1107.1636741658.

The spelling of 1357173855 in words is "one billion, three hundred fifty-seven million, one hundred seventy-three thousand, eight hundred fifty-five".