2256556487 has 2 divisors, whose sum is σ = 2256556488. Its totient is φ = 2256556486.

The previous prime is 2256556459. The next prime is 2256556513. The reversal of 2256556487 is 7846556522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2256556487 - 2²⁴ = 2239779271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2256556457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1128278243 + 1128278244.

It is an arithmetic number, because the mean of its divisors is an integer number (1128278244).

Almost surely, 2^2256556487 is an apocalyptic number.

2256556487 is a deficient number, since it is larger than the sum of its proper divisors (1).

2256556487 is an equidigital number, since it uses as much as digits as its factorization.

2256556487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032000, while the sum is 50.

The square root of 2256556487 is about 47503.2260693945. The cubic root of 2256556487 is about 1311.6422670008.

The spelling of 2256556487 in words is "two billion, two hundred fifty-six million, five hundred fifty-six thousand, four hundred eighty-seven".