1253365 has 4 divisors (see below), whose sum is σ = 1504044. Its totient is φ = 1002688.

The previous prime is 1253347. The next prime is 1253377. The reversal of 1253365 is 5633521.

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 603729 + 649636 = 777^2 + 806^2 .

It is a cyclic number.

It is not a de Polignac number, because 1253365 - 2⁵ = 1253333 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent 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, 125332 + ... + 125341.

It is an arithmetic number, because the mean of its divisors is an integer number (376011).

2^1253365 is an apocalyptic number.

It is an amenable number.

1253365 is a deficient number, since it is larger than the sum of its proper divisors (250679).

1253365 is an equidigital number, since it uses as much as digits as its factorization.

1253365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250678.

The product of its digits is 2700, while the sum is 25.

The square root of 1253365 is about 1119.5378510796. The cubic root of 1253365 is about 107.8183101959.

Adding to 1253365 its reverse (5633521), we get a palindrome (6886886).

The spelling of 1253365 in words is "one million, two hundred fifty-three thousand, three hundred sixty-five".