1312579553 has 2 divisors, whose sum is σ = 1312579554. Its totient is φ = 1312579552.

The previous prime is 1312579487. The next prime is 1312579633. The reversal of 1312579553 is 3559752131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1086889024 + 225690529 = 32968^2 + 15023^2 .

It is a cyclic number.

It is not a de Polignac number, because 1312579553 - 2²² = 1308385249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1312579553.

It is not a weakly prime, because it can be changed into another prime (1312579253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656289776 + 656289777.

It is an arithmetic number, because the mean of its divisors is an integer number (656289777).

Almost surely, 2^1312579553 is an apocalyptic number.

It is an amenable number.

1312579553 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312579553 is an equidigital number, since it uses as much as digits as its factorization.

1312579553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141750, while the sum is 41.

The square root of 1312579553 is about 36229.5397845460. The cubic root of 1312579553 is about 1094.9019054067.

The spelling of 1312579553 in words is "one billion, three hundred twelve million, five hundred seventy-nine thousand, five hundred fifty-three".