2555215213 has 2 divisors, whose sum is σ = 2555215214. Its totient is φ = 2555215212.

The previous prime is 2555215193. The next prime is 2555215219. The reversal of 2555215213 is 3125125552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2005875369 + 549339844 = 44787^2 + 23438^2 .

It is a cyclic number.

It is not a de Polignac number, because 2555215213 - 2⁵ = 2555215181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2555215219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1277607606 + 1277607607.

It is an arithmetic number, because the mean of its divisors is an integer number (1277607607).

Almost surely, 2^2555215213 is an apocalyptic number.

It is an amenable number.

2555215213 is a deficient number, since it is larger than the sum of its proper divisors (1).

2555215213 is an equidigital number, since it uses as much as digits as its factorization.

2555215213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15000, while the sum is 31.

The square root of 2555215213 is about 50549.1366197287. The cubic root of 2555215213 is about 1367.1279476079.

The spelling of 2555215213 in words is "two billion, five hundred fifty-five million, two hundred fifteen thousand, two hundred thirteen".