45407223 has 28 divisors (see below), whose sum is σ = 68640400. Its totient is φ = 30023136.

The previous prime is 45407209. The next prime is 45407227. The reversal of 45407223 is 32270454.

It is not a de Polignac number, because 45407223 - 2⁵ = 45407191 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45407227) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 144915 + ... + 145227.

Almost surely, 2^45407223 is an apocalyptic number.

45407223 is a deficient number, since it is larger than the sum of its proper divisors (23233177).

45407223 is an equidigital number, since it uses as much as digits as its factorization.

45407223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530 (or 515 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 45407223 is about 6738.4881835617. The cubic root of 45407223 is about 356.7590351890.

Adding to 45407223 its reverse (32270454), we get a palindrome (77677677).

The spelling of 45407223 in words is "forty-five million, four hundred seven thousand, two hundred twenty-three".