1297512056 has 32 divisors (see below), whose sum is σ = 2456514480. Its totient is φ = 642470400.

The previous prime is 1297512023. The next prime is 1297512059. The reversal of 1297512056 is 6502157921.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1297512059) 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 7 ways as a sum of consecutive naturals, for example, 414176 + ... + 417296.

Almost surely, 2^1297512056 is an apocalyptic number.

It is an amenable number.

1297512056 is a deficient number, since it is larger than the sum of its proper divisors (1159002424).

1297512056 is a wasteful number, since it uses less digits than its factorization.

1297512056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3615 (or 3611 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 38.

The square root of 1297512056 is about 36020.9946558948. The cubic root of 1297512056 is about 1090.6962014155.

Adding to 1297512056 its reverse (6502157921), we get a palindrome (7799669977).

The spelling of 1297512056 in words is "one billion, two hundred ninety-seven million, five hundred twelve thousand, fifty-six".