1365215253 has 8 divisors (see below), whose sum is σ = 1864684416. Its totient is φ = 887944800.

The previous prime is 1365215239. The next prime is 1365215297. The reversal of 1365215253 is 3525125631.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1365215253 - 2⁵ = 1365215221 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1365215053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5549533 + ... + 5549778.

It is an arithmetic number, because the mean of its divisors is an integer number (233085552).

Almost surely, 2^1365215253 is an apocalyptic number.

It is an amenable number.

1365215253 is a deficient number, since it is larger than the sum of its proper divisors (499469163).

1365215253 is a wasteful number, since it uses less digits than its factorization.

1365215253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11099355.

The product of its digits is 27000, while the sum is 33.

The square root of 1365215253 is about 36948.8193722073. The cubic root of 1365215253 is about 1109.3460566599.

The spelling of 1365215253 in words is "one billion, three hundred sixty-five million, two hundred fifteen thousand, two hundred fifty-three".