52807561 has 4 divisors (see below), whose sum is σ = 52864272. Its totient is φ = 52750852.

The previous prime is 52807553. The next prime is 52807567. The reversal of 52807561 is 16570825.

52807561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 52807561 - 2³ = 52807553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52807567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26935 + ... + 28828.

It is an arithmetic number, because the mean of its divisors is an integer number (13216068).

Almost surely, 2^52807561 is an apocalyptic number.

It is an amenable number.

52807561 is a deficient number, since it is larger than the sum of its proper divisors (56711).

52807561 is an equidigital number, since it uses as much as digits as its factorization.

52807561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56710.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 52807561 is about 7266.8811053987. The cubic root of 52807561 is about 375.1733977355.

The spelling of 52807561 in words is "fifty-two million, eight hundred seven thousand, five hundred sixty-one".