1156465 has 4 divisors (see below), whose sum is σ = 1387764. Its totient is φ = 925168.

The previous prime is 1156457. The next prime is 1156483. The reversal of 1156465 is 5646511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5646511 = 13 ⋅434347.

It can be written as a sum of positive squares in 2 ways, for example, as 815409 + 341056 = 903^2 + 584^2 .

It is a cyclic number.

It is not a de Polignac number, because 1156465 - 2³ = 1156457 is a prime.

It is a super-2 number, since 2×1156465² = 2674822592450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115642 + ... + 115651.

It is an arithmetic number, because the mean of its divisors is an integer number (346941).

2^1156465 is an apocalyptic number.

It is an amenable number.

1156465 is a deficient number, since it is larger than the sum of its proper divisors (231299).

1156465 is an equidigital number, since it uses as much as digits as its factorization.

1156465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231298.

The product of its digits is 3600, while the sum is 28.

The square root of 1156465 is about 1075.3906267027. The cubic root of 1156465 is about 104.9649164724.

The spelling of 1156465 in words is "one million, one hundred fifty-six thousand, four hundred sixty-five".