45542223 has 8 divisors (see below), whose sum is σ = 67470000. Its totient is φ = 30361464.

The previous prime is 45542219. The next prime is 45542243. The reversal of 45542223 is 32224554.

It is a happy number.

It is not a de Polignac number, because 45542223 - 2² = 45542219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1686749 = 45542223 / (4 + 5 + 5 + 4 + 2 + 2 + 2 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45542243) 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 7 ways as a sum of consecutive naturals, for example, 843348 + ... + 843401.

It is an arithmetic number, because the mean of its divisors is an integer number (8433750).

Almost surely, 2^45542223 is an apocalyptic number.

45542223 is a deficient number, since it is larger than the sum of its proper divisors (21927777).

45542223 is a wasteful number, since it uses less digits than its factorization.

45542223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1686758 (or 1686752 counting only the distinct ones).

The product of its digits is 9600, while the sum is 27.

The square root of 45542223 is about 6748.4978328514. The cubic root of 45542223 is about 357.1122449114.

Adding to 45542223 its reverse (32224554), we get a palindrome (77766777).

The spelling of 45542223 in words is "forty-five million, five hundred forty-two thousand, two hundred twenty-three".