1297553 has 4 divisors (see below), whose sum is σ = 1332660. Its totient is φ = 1262448.

The previous prime is 1297537. The next prime is 1297561. The reversal of 1297553 is 3557921.

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 1236544 + 61009 = 1112^2 + 247^2 .

It is a cyclic number.

It is not a de Polignac number, because 1297553 - 2⁴ = 1297537 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1297523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17498 + ... + 17571.

It is an arithmetic number, because the mean of its divisors is an integer number (333165).

2^1297553 is an apocalyptic number.

It is an amenable number.

1297553 is a deficient number, since it is larger than the sum of its proper divisors (35107).

1297553 is an equidigital number, since it uses as much as digits as its factorization.

1297553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35106.

The product of its digits is 9450, while the sum is 32.

The square root of 1297553 is about 1139.1018391698. The cubic root of 1297553 is about 109.0707673883.

The spelling of 1297553 in words is "one million, two hundred ninety-seven thousand, five hundred fifty-three".