1097597 has 4 divisors (see below), whose sum is σ = 1102620. Its totient is φ = 1092576.

The previous prime is 1097557. The next prime is 1097599. The reversal of 1097597 is 7957901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7957901 = 7 ⋅1136843.

It can be written as a sum of positive squares in 2 ways, for example, as 988036 + 109561 = 994^2 + 331^2 .

It is a cyclic number.

It is not a de Polignac number, because 1097597 - 2⁶ = 1097533 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1097597.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1097599) 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, 2168 + ... + 2625.

It is an arithmetic number, because the mean of its divisors is an integer number (275655).

2^1097597 is an apocalyptic number.

It is an amenable number.

1097597 is a deficient number, since it is larger than the sum of its proper divisors (5023).

1097597 is an equidigital number, since it uses as much as digits as its factorization.

1097597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5022.

The product of its (nonzero) digits is 19845, while the sum is 38.

The square root of 1097597 is about 1047.6626365391. The cubic root of 1097597 is about 103.1527879814.

The spelling of 1097597 in words is "one million, ninety-seven thousand, five hundred ninety-seven".