4591540 has 48 divisors (see below), whose sum is σ = 10422720. Its totient is φ = 1693440.

The previous prime is 4591523. The next prime is 4591567. The reversal of 4591540 is 451954.

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 4591499 and 4591508.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16200 + ... + 16480.

It is an arithmetic number, because the mean of its divisors is an integer number (217140).

Almost surely, 2^4591540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4591540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5211360).

4591540 is an abundant number, since it is smaller than the sum of its proper divisors (5831180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4591540 is a wasteful number, since it uses less digits than its factorization.

4591540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352 (or 350 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 4591540 is about 2142.7879036433. The cubic root of 4591540 is about 166.2083318416.

The spelling of 4591540 in words is "four million, five hundred ninety-one thousand, five hundred forty".