2555709901 has 2 divisors, whose sum is σ = 2555709902. Its totient is φ = 2555709900.

The previous prime is 2555709887. The next prime is 2555709953. The reversal of 2555709901 is 1099075552.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2433054276 + 122655625 = 49326^2 + 11075^2 .

It is a cyclic number.

It is not a de Polignac number, because 2555709901 - 2⁹ = 2555709389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2555709301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1277854950 + 1277854951.

It is an arithmetic number, because the mean of its divisors is an integer number (1277854951).

Almost surely, 2^2555709901 is an apocalyptic number.

It is an amenable number.

2555709901 is a deficient number, since it is larger than the sum of its proper divisors (1).

2555709901 is an equidigital number, since it uses as much as digits as its factorization.

2555709901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141750, while the sum is 43.

The square root of 2555709901 is about 50554.0295228778. The cubic root of 2555709901 is about 1367.2161669416.

The spelling of 2555709901 in words is "two billion, five hundred fifty-five million, seven hundred nine thousand, nine hundred one".