2515313897 has 4 divisors (see below), whose sum is σ = 2663273556. Its totient is φ = 2367354240.

The previous prime is 2515313893. The next prime is 2515313923. The reversal of 2515313897 is 7983135152.

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

It can be written as a sum of positive squares in 2 ways, for example, as 860776921 + 1654536976 = 29339^2 + 40676^2 .

It is a cyclic number.

It is not a de Polignac number, because 2515313897 - 2² = 2515313893 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2515313891) 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 3 ways as a sum of consecutive naturals, for example, 73979804 + ... + 73979837.

It is an arithmetic number, because the mean of its divisors is an integer number (665818389).

Almost surely, 2^2515313897 is an apocalyptic number.

It is an amenable number.

2515313897 is a deficient number, since it is larger than the sum of its proper divisors (147959659).

2515313897 is a wasteful number, since it uses less digits than its factorization.

2515313897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147959658.

The product of its digits is 226800, while the sum is 44.

The square root of 2515313897 is about 50152.9051700896. The cubic root of 2515313897 is about 1359.9743898364.

The spelling of 2515313897 in words is "two billion, five hundred fifteen million, three hundred thirteen thousand, eight hundred ninety-seven".