52561567 has 4 divisors (see below), whose sum is σ = 53346136. Its totient is φ = 51777000.

The previous prime is 52561541. The next prime is 52561573. The reversal of 52561567 is 76516525.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 52561567 - 2¹¹ = 52559519 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 (52561517) 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, 392184 + ... + 392317.

It is an arithmetic number, because the mean of its divisors is an integer number (13336534).

Almost surely, 2^52561567 is an apocalyptic number.

52561567 is a deficient number, since it is larger than the sum of its proper divisors (784569).

52561567 is an equidigital number, since it uses as much as digits as its factorization.

52561567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784568.

The product of its digits is 63000, while the sum is 37.

The square root of 52561567 is about 7249.9356548869. The cubic root of 52561567 is about 374.5899327868.

The spelling of 52561567 in words is "fifty-two million, five hundred sixty-one thousand, five hundred sixty-seven".