2507278091 has 2 divisors, whose sum is σ = 2507278092. Its totient is φ = 2507278090.

The previous prime is 2507278073. The next prime is 2507278127. The reversal of 2507278091 is 1908727052.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2507278091 - 2³⁰ = 1433536267 is a prime.

It is not a weakly prime, because it can be changed into another prime (2507278051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1253639045 + 1253639046.

It is an arithmetic number, because the mean of its divisors is an integer number (1253639046).

Almost surely, 2^2507278091 is an apocalyptic number.

2507278091 is a deficient number, since it is larger than the sum of its proper divisors (1).

2507278091 is an equidigital number, since it uses as much as digits as its factorization.

2507278091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70560, while the sum is 41.

The square root of 2507278091 is about 50072.7280163564. The cubic root of 2507278091 is about 1358.5245841725.

The spelling of 2507278091 in words is "two billion, five hundred seven million, two hundred seventy-eight thousand, ninety-one".