2513321145 has 12 divisors (see below), whose sum is σ = 4356423396. Its totient is φ = 1340437920.

The previous prime is 2513321071. The next prime is 2513321177. The reversal of 2513321145 is 5411233152.

2513321145 is a `hidden beast` number, since 2 + 513 + 3 + 2 + 1 + 145 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 320553216 + 2192767929 = 17904^2 + 46827^2 .

It is not a de Polignac number, because 2513321145 - 2⁷ = 2513321017 is a prime.

It is a super-2 number, since 2×2513321145² = 12633566355808222050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27925746 + ... + 27925835.

It is an arithmetic number, because the mean of its divisors is an integer number (363035283).

Almost surely, 2^2513321145 is an apocalyptic number.

It is an amenable number.

2513321145 is a deficient number, since it is larger than the sum of its proper divisors (1843102251).

2513321145 is a wasteful number, since it uses less digits than its factorization.

2513321145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55851592 (or 55851589 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 2513321145 is about 50133.0344683024. The cubic root of 2513321145 is about 1359.6151493599.

Adding to 2513321145 its reverse (5411233152), we get a palindrome (7924554297).

The spelling of 2513321145 in words is "two billion, five hundred thirteen million, three hundred twenty-one thousand, one hundred forty-five".