452721 has 4 divisors (see below), whose sum is σ = 603632. Its totient is φ = 301812.

The previous prime is 452701. The next prime is 452731. The reversal of 452721 is 127254.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 452721 - 2⁵ = 452689 is a prime.

It is a D-number.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (452701) 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, 75451 + ... + 75456.

It is an arithmetic number, because the mean of its divisors is an integer number (150908).

2⁴⁵²⁷²¹ is an apocalyptic number.

It is an amenable number.

452721 is a deficient number, since it is larger than the sum of its proper divisors (150911).

452721 is a wasteful number, since it uses less digits than its factorization.

452721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150910.

The product of its digits is 560, while the sum is 21.

The square root of 452721 is about 672.8454503079. The cubic root of 452721 is about 76.7850868938.

Adding to 452721 its reverse (127254), we get a palindrome (579975).

It can be divided in two parts, 4 and 52721, that added together give a palindrome (52725).

The spelling of 452721 in words is "four hundred fifty-two thousand, seven hundred twenty-one".