1097323057 has 4 divisors (see below), whose sum is σ = 1124087076. Its totient is φ = 1070559040.

The previous prime is 1097323043. The next prime is 1097323061. The reversal of 1097323057 is 7503237901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7503237901 = 349 ⋅21499249.

It can be written as a sum of positive squares in 2 ways, for example, as 279591841 + 817731216 = 16721^2 + 28596^2 .

It is a cyclic number.

It is not a de Polignac number, because 1097323057 - 2⁷ = 1097322929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1097323457) 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, 13381948 + ... + 13382029.

It is an arithmetic number, because the mean of its divisors is an integer number (281021769).

Almost surely, 2^1097323057 is an apocalyptic number.

It is an amenable number.

1097323057 is a deficient number, since it is larger than the sum of its proper divisors (26764019).

1097323057 is an equidigital number, since it uses as much as digits as its factorization.

1097323057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26764018.

The product of its (nonzero) digits is 39690, while the sum is 37.

The square root of 1097323057 is about 33125.8668867699. The cubic root of 1097323057 is about 1031.4420549460.

The spelling of 1097323057 in words is "one billion, ninety-seven million, three hundred twenty-three thousand, fifty-seven".