2597121356 has 6 divisors (see below), whose sum is σ = 4544962380. Its totient is φ = 1298560676.

The previous prime is 2597121349. The next prime is 2597121389. The reversal of 2597121356 is 6531217952.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 324640166 + ... + 324640173.

It is an arithmetic number, because the mean of its divisors is an integer number (757493730).

Almost surely, 2^2597121356 is an apocalyptic number.

It is an amenable number.

2597121356 is a deficient number, since it is larger than the sum of its proper divisors (1947841024).

2597121356 is a wasteful number, since it uses less digits than its factorization.

2597121356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649280343 (or 649280341 counting only the distinct ones).

The product of its digits is 113400, while the sum is 41.

The square root of 2597121356 is about 50961.9598916682. The cubic root of 2597121356 is about 1374.5612009852.

The spelling of 2597121356 in words is "two billion, five hundred ninety-seven million, one hundred twenty-one thousand, three hundred fifty-six".