4531591 has 4 divisors (see below), whose sum is σ = 4554792. Its totient is φ = 4508392.

The previous prime is 4531573. The next prime is 4531603. The reversal of 4531591 is 1951354.

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 4531591 - 2⁵ = 4531559 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 (4531561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11305 + ... + 11698.

It is an arithmetic number, because the mean of its divisors is an integer number (1138698).

Almost surely, 2^4531591 is an apocalyptic number.

4531591 is a deficient number, since it is larger than the sum of its proper divisors (23201).

4531591 is a wasteful number, since it uses less digits than its factorization.

4531591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23200.

The product of its digits is 2700, while the sum is 28.

The square root of 4531591 is about 2128.7533910719. The cubic root of 4531591 is about 165.4817996129.

The spelling of 4531591 in words is "four million, five hundred thirty-one thousand, five hundred ninety-one".