4521722 has 8 divisors (see below), whose sum is σ = 7001472. Its totient is φ = 2187900.

The previous prime is 4521721. The next prime is 4521739. The reversal of 4521722 is 2271254.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4521721) 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, 36404 + ... + 36527.

It is an arithmetic number, because the mean of its divisors is an integer number (875184).

Almost surely, 2^4521722 is an apocalyptic number.

4521722 is a deficient number, since it is larger than the sum of its proper divisors (2479750).

4521722 is a wasteful number, since it uses less digits than its factorization.

4521722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72964.

The product of its digits is 1120, while the sum is 23.

The square root of 4521722 is about 2126.4341043164. The cubic root of 4521722 is about 165.3615823147.

Adding to 4521722 its reverse (2271254), we get a palindrome (6792976).

The spelling of 4521722 in words is "four million, five hundred twenty-one thousand, seven hundred twenty-two".