53265891 has 12 divisors (see below), whose sum is σ = 82616712. Its totient is φ = 30437568.

The previous prime is 53265881. The next prime is 53265917. The reversal of 53265891 is 19856235.

It is not a de Polignac number, because 53265891 - 2⁷ = 53265763 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (53265881) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 181030 + ... + 181323.

It is an arithmetic number, because the mean of its divisors is an integer number (6884726).

Almost surely, 2^53265891 is an apocalyptic number.

53265891 is a deficient number, since it is larger than the sum of its proper divisors (29350821).

53265891 is a wasteful number, since it uses less digits than its factorization.

53265891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362370 (or 362363 counting only the distinct ones).

The product of its digits is 64800, while the sum is 39.

The square root of 53265891 is about 7298.3485118210. The cubic root of 53265891 is about 376.2556804623.

The spelling of 53265891 in words is "fifty-three million, two hundred sixty-five thousand, eight hundred ninety-one".