52565261 has 4 divisors (see below), whose sum is σ = 60074592. Its totient is φ = 45055932.

The previous prime is 52565237. The next prime is 52565273. The reversal of 52565261 is 16256525.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 52565261 - 2²² = 48370957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52562261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3754655 + ... + 3754668.

It is an arithmetic number, because the mean of its divisors is an integer number (15018648).

Almost surely, 2^52565261 is an apocalyptic number.

It is an amenable number.

52565261 is a deficient number, since it is larger than the sum of its proper divisors (7509331).

52565261 is an equidigital number, since it uses as much as digits as its factorization.

52565261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7509330.

The product of its digits is 18000, while the sum is 32.

The square root of 52565261 is about 7250.1904112927. The cubic root of 52565261 is about 374.5987079108.

The spelling of 52565261 in words is "fifty-two million, five hundred sixty-five thousand, two hundred sixty-one".