1297513 has 4 divisors (see below), whose sum is σ = 1482880. Its totient is φ = 1112148.

The previous prime is 1297507. The next prime is 1297519. The reversal of 1297513 is 3157921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (1297507) and next prime (1297519).

It is a cyclic number.

It is not a de Polignac number, because 1297513 - 2⁹ = 1297001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1297519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92673 + ... + 92686.

It is an arithmetic number, because the mean of its divisors is an integer number (370720).

2^1297513 is an apocalyptic number.

It is an amenable number.

1297513 is a deficient number, since it is larger than the sum of its proper divisors (185367).

1297513 is an equidigital number, since it uses as much as digits as its factorization.

1297513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185366.

The product of its digits is 1890, while the sum is 28.

The square root of 1297513 is about 1139.0842813418. The cubic root of 1297513 is about 109.0696465926.

The spelling of 1297513 in words is "one million, two hundred ninety-seven thousand, five hundred thirteen".