2555707909 has 2 divisors, whose sum is σ = 2555707910. Its totient is φ = 2555707908.

The previous prime is 2555707901. The next prime is 2555707943. The reversal of 2555707909 is 9097075552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1701315009 + 854392900 = 41247^2 + 29230^2 .

It is a cyclic number.

It is not a de Polignac number, because 2555707909 - 2³ = 2555707901 is a prime.

It is a super-2 number, since 2×2555707909² = 13063285832250304562, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2555707901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1277853954 + 1277853955.

It is an arithmetic number, because the mean of its divisors is an integer number (1277853955).

Almost surely, 2^2555707909 is an apocalyptic number.

It is an amenable number.

2555707909 is a deficient number, since it is larger than the sum of its proper divisors (1).

2555707909 is an equidigital number, since it uses as much as digits as its factorization.

2555707909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 992250, while the sum is 49.

The square root of 2555707909 is about 50554.0098211804. The cubic root of 2555707909 is about 1367.2158117245.

The spelling of 2555707909 in words is "two billion, five hundred fifty-five million, seven hundred seven thousand, nine hundred nine".