11455897 has 4 divisors (see below), whose sum is σ = 11672100. Its totient is φ = 11239696.

The previous prime is 11455883. The next prime is 11455937. The reversal of 11455897 is 79855411.

It is a happy number.

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 4596736 + 6859161 = 2144^2 + 2619^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11455897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11455837) 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, 108022 + ... + 108127.

It is an arithmetic number, because the mean of its divisors is an integer number (2918025).

Almost surely, 2^11455897 is an apocalyptic number.

It is an amenable number.

11455897 is a deficient number, since it is larger than the sum of its proper divisors (216203).

11455897 is an equidigital number, since it uses as much as digits as its factorization.

11455897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216202.

The product of its digits is 50400, while the sum is 40.

The square root of 11455897 is about 3384.6561125172. The cubic root of 11455897 is about 225.4289561730.

The spelling of 11455897 in words is "eleven million, four hundred fifty-five thousand, eight hundred ninety-seven".