4520731 has 2 divisors, whose sum is σ = 4520732. Its totient is φ = 4520730.

The previous prime is 4520729. The next prime is 4520743. The reversal of 4520731 is 1370254.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4520731 - 2¹ = 4520729 is a prime.

It is a super-3 number, since 3×4520731³ (a number of 21 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 4520729, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4520431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2260365 + 2260366.

It is an arithmetic number, because the mean of its divisors is an integer number (2260366).

Almost surely, 2^4520731 is an apocalyptic number.

4520731 is a deficient number, since it is larger than the sum of its proper divisors (1).

4520731 is an equidigital number, since it uses as much as digits as its factorization.

4520731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 4520731 is about 2126.2010723354. The cubic root of 4520731 is about 165.3495009807.

Adding to 4520731 its reverse (1370254), we get a palindrome (5890985).

The spelling of 4520731 in words is "four million, five hundred twenty thousand, seven hundred thirty-one".