1153897 has 4 divisors (see below), whose sum is σ = 1178496. Its totient is φ = 1129300.

The previous prime is 1153891. The next prime is 1153921. The reversal of 1153897 is 7983511.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 1153897 - 2⁷ = 1153769 is a prime.

It is a Duffinian number.

1153897 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1153891) 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, 12229 + ... + 12322.

It is an arithmetic number, because the mean of its divisors is an integer number (294624).

2^1153897 is an apocalyptic number.

It is an amenable number.

1153897 is a deficient number, since it is larger than the sum of its proper divisors (24599).

1153897 is an equidigital number, since it uses as much as digits as its factorization.

1153897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24598.

The product of its digits is 7560, while the sum is 34.

The square root of 1153897 is about 1074.1959783950. The cubic root of 1153897 is about 104.8871652595.

The spelling of 1153897 in words is "one million, one hundred fifty-three thousand, eight hundred ninety-seven".