2555215679 has 2 divisors, whose sum is σ = 2555215680. Its totient is φ = 2555215678.

The previous prime is 2555215631. The next prime is 2555215717. The reversal of 2555215679 is 9765125552.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2555215679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2555215279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1277607839 + 1277607840.

It is an arithmetic number, because the mean of its divisors is an integer number (1277607840).

Almost surely, 2^2555215679 is an apocalyptic number.

2555215679 is a deficient number, since it is larger than the sum of its proper divisors (1).

2555215679 is an equidigital number, since it uses as much as digits as its factorization.

2555215679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 945000, while the sum is 47.

The square root of 2555215679 is about 50549.1412291050. The cubic root of 2555215679 is about 1367.1280307165.

The spelling of 2555215679 in words is "two billion, five hundred fifty-five million, two hundred fifteen thousand, six hundred seventy-nine".