52320591 has 24 divisors (see below), whose sum is σ = 78409344. Its totient is φ = 33583680.

The previous prime is 52320589. The next prime is 52320613. The reversal of 52320591 is 19502325.

52320591 is a `hidden beast` number, since 52 + 3 + 20 + 591 = 666.

It is not a de Polignac number, because 52320591 - 2¹ = 52320589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52320391) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 76945 + ... + 77621.

It is an arithmetic number, because the mean of its divisors is an integer number (3267056).

Almost surely, 2^52320591 is an apocalyptic number.

52320591 is a deficient number, since it is larger than the sum of its proper divisors (26088753).

52320591 is a wasteful number, since it uses less digits than its factorization.

52320591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991 (or 988 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 52320591 is about 7233.2973808630. The cubic root of 52320591 is about 374.0166020636.

The spelling of 52320591 in words is "fifty-two million, three hundred twenty thousand, five hundred ninety-one".