2559631097 has 4 divisors (see below), whose sum is σ = 2559769716. Its totient is φ = 2559492480.

The previous prime is 2559631073. The next prime is 2559631117. The reversal of 2559631097 is 7901369552.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1653560896 + 906070201 = 40664^2 + 30101^2 .

It is a cyclic number.

It is not a de Polignac number, because 2559631097 - 2⁸ = 2559630841 is a prime.

It is a super-4 number, since 4×2559631097⁴ (a number of 39 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (2559631007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36404 + ... + 80277.

It is an arithmetic number, because the mean of its divisors is an integer number (639942429).

Almost surely, 2^2559631097 is an apocalyptic number.

It is an amenable number.

2559631097 is a deficient number, since it is larger than the sum of its proper divisors (138619).

2559631097 is a wasteful number, since it uses less digits than its factorization.

2559631097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138618.

The product of its (nonzero) digits is 510300, while the sum is 47.

The square root of 2559631097 is about 50592.7968884900. The cubic root of 2559631097 is about 1367.9150442622.

The spelling of 2559631097 in words is "two billion, five hundred fifty-nine million, six hundred thirty-one thousand, ninety-seven".