2615197321 has 9 divisors (see below), whose sum is σ = 2875174183. Its totient is φ = 2376940720.

The previous prime is 2615197303. The next prime is 2615197327. The reversal of 2615197321 is 1237915162.

The square root of 2615197321 is 51139.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2559246921 + 55950400 = 50589^2 + 7480^2 .

It is not a de Polignac number, because 2615197321 - 2²⁷ = 2480979593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2615197327) 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 8 ways as a sum of consecutive naturals, for example, 560205 + ... + 564853.

Almost surely, 2^2615197321 is an apocalyptic number.

2615197321 is the 51139-th square number.

2615197321 is the 25570-th centered octagonal number.

It is an amenable number.

2615197321 is a deficient number, since it is larger than the sum of its proper divisors (259976862).

2615197321 is an frugal number, since it uses more digits than its factorization.

2615197321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9320 (or 4660 counting only the distinct ones).

The product of its digits is 22680, while the sum is 37.

The cubic root of 2615197321 is about 1377.7428130722.

The spelling of 2615197321 in words is "two billion, six hundred fifteen million, one hundred ninety-seven thousand, three hundred twenty-one".