52591389 has 8 divisors (see below), whose sum is σ = 70569120. Its totient is φ = 34837296.

The previous prime is 52591367. The next prime is 52591403. The reversal of 52591389 is 98319525.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 52591389 - 2¹⁶ = 52525853 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 52591389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52591309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55359 + ... + 56300.

It is an arithmetic number, because the mean of its divisors is an integer number (8821140).

Almost surely, 2^52591389 is an apocalyptic number.

It is an amenable number.

52591389 is a deficient number, since it is larger than the sum of its proper divisors (17977731).

52591389 is a wasteful number, since it uses less digits than its factorization.

52591389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111819.

The product of its digits is 97200, while the sum is 42.

The square root of 52591389 is about 7251.9920711485. The cubic root of 52591389 is about 374.6607634309.

The spelling of 52591389 in words is "fifty-two million, five hundred ninety-one thousand, three hundred eighty-nine".