52199591 has 4 divisors (see below), whose sum is σ = 53055384. Its totient is φ = 51343800.

The previous prime is 52199573. The next prime is 52199597. The reversal of 52199591 is 19599125.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52199591 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 (52199597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 427805 + ... + 427926.

It is an arithmetic number, because the mean of its divisors is an integer number (13263846).

Almost surely, 2^52199591 is an apocalyptic number.

52199591 is a deficient number, since it is larger than the sum of its proper divisors (855793).

52199591 is an equidigital number, since it uses as much as digits as its factorization.

52199591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855792.

The product of its digits is 36450, while the sum is 41.

The square root of 52199591 is about 7224.9284425522. The cubic root of 52199591 is about 373.7280544752.

The spelling of 52199591 in words is "fifty-two million, one hundred ninety-nine thousand, five hundred ninety-one".