2315155557 has 48 divisors (see below), whose sum is σ = 3869087040. Its totient is φ = 1218961920.

The previous prime is 2315155541. The next prime is 2315155559. The reversal of 2315155557 is 7555515132.

It is not a de Polignac number, because 2315155557 - 2⁴ = 2315155541 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2315155559) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 65794 + ... + 94652.

It is an arithmetic number, because the mean of its divisors is an integer number (80605980).

Almost surely, 2^2315155557 is an apocalyptic number.

It is an amenable number.

2315155557 is a deficient number, since it is larger than the sum of its proper divisors (1553931483).

2315155557 is a wasteful number, since it uses less digits than its factorization.

2315155557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28914 (or 28903 counting only the distinct ones).

The product of its digits is 131250, while the sum is 39.

The square root of 2315155557 is about 48116.0633988276. The cubic root of 2315155557 is about 1322.8991141293.

The spelling of 2315155557 in words is "two billion, three hundred fifteen million, one hundred fifty-five thousand, five hundred fifty-seven".