451512023 has 4 divisors (see below), whose sum is σ = 451824648. Its totient is φ = 451199400.

The previous prime is 451512007. The next prime is 451512037. The reversal of 451512023 is 320215154.

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 451512023 - 2⁴ = 451512007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 451512023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451512043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154136 + ... + 157037.

It is an arithmetic number, because the mean of its divisors is an integer number (112956162).

Almost surely, 2^451512023 is an apocalyptic number.

451512023 is a deficient number, since it is larger than the sum of its proper divisors (312625).

451512023 is a wasteful number, since it uses less digits than its factorization.

451512023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312624.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 451512023 is about 21248.8122726895. The cubic root of 451512023 is about 767.1667525161.

Adding to 451512023 its reverse (320215154), we get a palindrome (771727177).

It can be divided in two parts, 45151 and 2023, that added together give a palindrome (47174).

The spelling of 451512023 in words is "four hundred fifty-one million, five hundred twelve thousand, twenty-three".