52207591 has 4 divisors (see below), whose sum is σ = 52249752. Its totient is φ = 52165432.

The previous prime is 52207579. The next prime is 52207601. The reversal of 52207591 is 19570225.

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 52207591 - 2⁵ = 52207559 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 (52207531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19165 + ... + 21718.

It is an arithmetic number, because the mean of its divisors is an integer number (13062438).

Almost surely, 2^52207591 is an apocalyptic number.

52207591 is a deficient number, since it is larger than the sum of its proper divisors (42161).

52207591 is a wasteful number, since it uses less digits than its factorization.

52207591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42160.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 52207591 is about 7225.4820600428. The cubic root of 52207591 is about 373.7471457596.

The spelling of 52207591 in words is "fifty-two million, two hundred seven thousand, five hundred ninety-one".