452009161 has 4 divisors (see below), whose sum is σ = 452052432. Its totient is φ = 451965892.

The previous prime is 452009149. The next prime is 452009177. The reversal of 452009161 is 161900254.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 452009161 - 2²³ = 443620553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (452009101) 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, 4806 + ... + 30448.

It is an arithmetic number, because the mean of its divisors is an integer number (113013108).

Almost surely, 2^452009161 is an apocalyptic number.

It is an amenable number.

452009161 is a deficient number, since it is larger than the sum of its proper divisors (43271).

452009161 is a wasteful number, since it uses less digits than its factorization.

452009161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43270.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 452009161 is about 21260.5070729745. The cubic root of 452009161 is about 767.4482126141.

The spelling of 452009161 in words is "four hundred fifty-two million, nine thousand, one hundred sixty-one".