452021155 has 4 divisors (see below), whose sum is σ = 542425392. Its totient is φ = 361616920.

The previous prime is 452021113. The next prime is 452021201. The reversal of 452021155 is 551120254.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 452021155 - 2²³ = 443632547 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45202111 + ... + 45202120.

It is an arithmetic number, because the mean of its divisors is an integer number (135606348).

Almost surely, 2^452021155 is an apocalyptic number.

452021155 is a deficient number, since it is larger than the sum of its proper divisors (90404237).

452021155 is an equidigital number, since it uses as much as digits as its factorization.

452021155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90404236.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 452021155 is about 21260.7891433973. The cubic root of 452021155 is about 767.4550005978.

Subtracting 452021155 from its reverse (551120254), we obtain a palindrome (99099099).

The spelling of 452021155 in words is "four hundred fifty-two million, twenty-one thousand, one hundred fifty-five".