45451223 has 4 divisors (see below), whose sum is σ = 45545040. Its totient is φ = 45357408.

The previous prime is 45451213. The next prime is 45451261. The reversal of 45451223 is 32215454.

It is a happy number.

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 45451223 - 2¹⁰ = 45450199 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45451192 and 45451201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45451213) 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, 46178 + ... + 47151.

It is an arithmetic number, because the mean of its divisors is an integer number (11386260).

Almost surely, 2^45451223 is an apocalyptic number.

45451223 is a deficient number, since it is larger than the sum of its proper divisors (93817).

45451223 is an equidigital number, since it uses as much as digits as its factorization.

45451223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93816.

The product of its digits is 4800, while the sum is 26.

The square root of 45451223 is about 6741.7522203059. The cubic root of 45451223 is about 356.8742322064.

Adding to 45451223 its reverse (32215454), we get a palindrome (77666677).

The spelling of 45451223 in words is "forty-five million, four hundred fifty-one thousand, two hundred twenty-three".