451542445 has 4 divisors (see below), whose sum is σ = 541850940. Its totient is φ = 361233952.

The previous prime is 451542439. The next prime is 451542521. The reversal of 451542445 is 544245154.

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

It can be written as a sum of positive squares in 2 ways, for example, as 50381604 + 401160841 = 7098^2 + 20029^2 .

It is a cyclic number.

It is not a de Polignac number, because 451542445 - 2⁹ = 451541933 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 451542445.

It is a congruent 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, 45154240 + ... + 45154249.

It is an arithmetic number, because the mean of its divisors is an integer number (135462735).

Almost surely, 2^451542445 is an apocalyptic number.

It is an amenable number.

451542445 is a deficient number, since it is larger than the sum of its proper divisors (90308495).

451542445 is an equidigital number, since it uses as much as digits as its factorization.

451542445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90308494.

The product of its digits is 64000, while the sum is 34.

The square root of 451542445 is about 21249.5281124076. The cubic root of 451542445 is about 767.1839821959.

Adding to 451542445 its reverse (544245154), we get a palindrome (995787599).

The spelling of 451542445 in words is "four hundred fifty-one million, five hundred forty-two thousand, four hundred forty-five".