452214021 has 16 divisors (see below), whose sum is σ = 699375104. Its totient is φ = 254550384.

The previous prime is 452214001. The next prime is 452214029. The reversal of 452214021 is 120412254.

It is not a de Polignac number, because 452214021 - 2⁵ = 452213989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (452214029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159295 + ... + 162108.

It is an arithmetic number, because the mean of its divisors is an integer number (43710944).

Almost surely, 2^452214021 is an apocalyptic number.

It is an amenable number.

452214021 is a deficient number, since it is larger than the sum of its proper divisors (247161083).

452214021 is a wasteful number, since it uses less digits than its factorization.

452214021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321480.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 452214021 is about 21265.3243803145. The cubic root of 452214021 is about 767.5641362934.

Adding to 452214021 its reverse (120412254), we get a palindrome (572626275).

The spelling of 452214021 in words is "four hundred fifty-two million, two hundred fourteen thousand, twenty-one".