1315394555 has 4 divisors (see below), whose sum is σ = 1578473472. Its totient is φ = 1052315640.

The previous prime is 1315394497. The next prime is 1315394579. The reversal of 1315394555 is 5554935131.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1315394555 - 2⁸ = 1315394299 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131539451 + ... + 131539460.

It is an arithmetic number, because the mean of its divisors is an integer number (394618368).

Almost surely, 2^1315394555 is an apocalyptic number.

1315394555 is a deficient number, since it is larger than the sum of its proper divisors (263078917).

1315394555 is an equidigital number, since it uses as much as digits as its factorization.

1315394555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263078916.

The product of its digits is 202500, while the sum is 41.

The square root of 1315394555 is about 36268.3685185866. The cubic root of 1315394555 is about 1095.6840676019.

The spelling of 1315394555 in words is "one billion, three hundred fifteen million, three hundred ninety-four thousand, five hundred fifty-five".