2515221345 has 64 divisors (see below), whose sum is σ = 4986261504. Its totient is φ = 1054252800.

The previous prime is 2515221329. The next prime is 2515221407. The reversal of 2515221345 is 5431225152.

It is not a de Polignac number, because 2515221345 - 2⁴ = 2515221329 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 200014 + ... + 212216.

It is an arithmetic number, because the mean of its divisors is an integer number (77910336).

Almost surely, 2^2515221345 is an apocalyptic number.

It is an amenable number.

2515221345 is a deficient number, since it is larger than the sum of its proper divisors (2471040159).

2515221345 is a wasteful number, since it uses less digits than its factorization.

2515221345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12382.

The product of its digits is 12000, while the sum is 30.

The square root of 2515221345 is about 50151.9824633085. The cubic root of 2515221345 is about 1359.9577093611.

Adding to 2515221345 its reverse (5431225152), we get a palindrome (7946446497).

The spelling of 2515221345 in words is "two billion, five hundred fifteen million, two hundred twenty-one thousand, three hundred forty-five".