451211047 has 4 divisors (see below), whose sum is σ = 515669776. Its totient is φ = 386752320.

The previous prime is 451211039. The next prime is 451211113. The reversal of 451211047 is 740112154.

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

It is a cyclic number.

It is not a de Polignac number, because 451211047 - 2³ = 451211039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451211017) 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, 32229354 + ... + 32229367.

It is an arithmetic number, because the mean of its divisors is an integer number (128917444).

Almost surely, 2^451211047 is an apocalyptic number.

451211047 is a deficient number, since it is larger than the sum of its proper divisors (64458729).

451211047 is an equidigital number, since it uses as much as digits as its factorization.

451211047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64458728.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 451211047 is about 21241.7289079773. The cubic root of 451211047 is about 766.9962512573.

The spelling of 451211047 in words is "four hundred fifty-one million, two hundred eleven thousand, forty-seven".