2509617091 has 2 divisors, whose sum is σ = 2509617092. Its totient is φ = 2509617090.

The previous prime is 2509617083. The next prime is 2509617107. The reversal of 2509617091 is 1907169052.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2509617091 - 2³ = 2509617083 is a prime.

It is not a weakly prime, because it can be changed into another prime (2509617031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1254808545 + 1254808546.

It is an arithmetic number, because the mean of its divisors is an integer number (1254808546).

Almost surely, 2^2509617091 is an apocalyptic number.

2509617091 is a deficient number, since it is larger than the sum of its proper divisors (1).

2509617091 is an equidigital number, since it uses as much as digits as its factorization.

2509617091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34020, while the sum is 40.

The square root of 2509617091 is about 50096.0785990281. The cubic root of 2509617091 is about 1358.9469015609.

The spelling of 2509617091 in words is "two billion, five hundred nine million, six hundred seventeen thousand, ninety-one".