656554259 has 2 divisors, whose sum is σ = 656554260. Its totient is φ = 656554258.

The previous prime is 656554243. The next prime is 656554267. The reversal of 656554259 is 952455656.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 656554259 - 2⁴ = 656554243 is a prime.

It is a super-2 number, since 2×656554259² = 862126990022078162, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (656554219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328277129 + 328277130.

It is an arithmetic number, because the mean of its divisors is an integer number (328277130).

Almost surely, 2^656554259 is an apocalyptic number.

656554259 is a deficient number, since it is larger than the sum of its proper divisors (1).

656554259 is an equidigital number, since it uses as much as digits as its factorization.

656554259 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1620000, while the sum is 47.

The square root of 656554259 is about 25623.3147543404. The cubic root of 656554259 is about 869.1409404578.

The spelling of 656554259 in words is "six hundred fifty-six million, five hundred fifty-four thousand, two hundred fifty-nine".