865052901 has 6 divisors (see below), whose sum is σ = 1249520870. Its totient is φ = 576701928.

The previous prime is 865052893. The next prime is 865052911. The reversal of 865052901 is 109250568.

It is a happy number.

865052901 is a `hidden beast` number, since 86 + 50 + 529 + 0 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 742508001 + 122544900 = 27249^2 + 11070^2 .

It is not a de Polignac number, because 865052901 - 2³ = 865052893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (865052911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 48058486 + ... + 48058503.

Almost surely, 2^865052901 is an apocalyptic number.

It is an amenable number.

865052901 is a deficient number, since it is larger than the sum of its proper divisors (384467969).

865052901 is a wasteful number, since it uses less digits than its factorization.

865052901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96116995 (or 96116992 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 865052901 is about 29411.7816699363. The cubic root of 865052901 is about 952.8273667554.

The spelling of 865052901 in words is "eight hundred sixty-five million, fifty-two thousand, nine hundred one".