52890591 has 8 divisors (see below), whose sum is σ = 75945520. Its totient is φ = 32548032.

The previous prime is 52890571. The next prime is 52890611. The reversal of 52890591 is 19509825.

It is an interprime number because it is at equal distance from previous prime (52890571) and next prime (52890611).

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

It is not a de Polignac number, because 52890591 - 2¹⁵ = 52857823 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 1356169 = 52890591 / (5 + 2 + 8 + 9 + 0 + 5 + 9 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52890571) 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, 678046 + ... + 678123.

It is an arithmetic number, because the mean of its divisors is an integer number (9493190).

Almost surely, 2^52890591 is an apocalyptic number.

52890591 is a deficient number, since it is larger than the sum of its proper divisors (23054929).

52890591 is a wasteful number, since it uses less digits than its factorization.

52890591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356185.

The product of its (nonzero) digits is 32400, while the sum is 39.

The square root of 52890591 is about 7272.5917663513. The cubic root of 52890591 is about 375.3699247396.

It can be divided in two parts, 528 and 90591, that added together give a palindrome (91119).

The spelling of 52890591 in words is "fifty-two million, eight hundred ninety thousand, five hundred ninety-one".