452133221 has 2 divisors, whose sum is σ = 452133222. Its totient is φ = 452133220.

The previous prime is 452133197. The next prime is 452133239. The reversal of 452133221 is 122331254.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 424936996 + 27196225 = 20614^2 + 5215^2 .

It is a cyclic number.

It is not a de Polignac number, because 452133221 - 2²² = 447938917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (452133271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 226066610 + 226066611.

It is an arithmetic number, because the mean of its divisors is an integer number (226066611).

Almost surely, 2^452133221 is an apocalyptic number.

It is an amenable number.

452133221 is a deficient number, since it is larger than the sum of its proper divisors (1).

452133221 is an equidigital number, since it uses as much as digits as its factorization.

452133221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 23.

The square root of 452133221 is about 21263.4244890140. The cubic root of 452133221 is about 767.5184183564.

Adding to 452133221 its reverse (122331254), we get a palindrome (574464475).

The spelling of 452133221 in words is "four hundred fifty-two million, one hundred thirty-three thousand, two hundred twenty-one".