2256517147 has 2 divisors, whose sum is σ = 2256517148. Its totient is φ = 2256517146.

The previous prime is 2256517129. The next prime is 2256517169. The reversal of 2256517147 is 7417156522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2256517147 - 2²⁷ = 2122299419 is a prime.

It is not a weakly prime, because it can be changed into another prime (2256517247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1128258573 + 1128258574.

It is an arithmetic number, because the mean of its divisors is an integer number (1128258574).

Almost surely, 2^2256517147 is an apocalyptic number.

2256517147 is a deficient number, since it is larger than the sum of its proper divisors (1).

2256517147 is an equidigital number, since it uses as much as digits as its factorization.

2256517147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 117600, while the sum is 40.

The square root of 2256517147 is about 47502.8119904496. The cubic root of 2256517147 is about 1311.6346447222.

The spelling of 2256517147 in words is "two billion, two hundred fifty-six million, five hundred seventeen thousand, one hundred forty-seven".