45661223 has 4 divisors (see below), whose sum is σ = 45689448. Its totient is φ = 45633000.

The previous prime is 45661181. The next prime is 45661241. The reversal of 45661223 is 32216654.

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 45661223 - 2⁶ = 45661159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45666223) 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, 11528 + ... + 14973.

It is an arithmetic number, because the mean of its divisors is an integer number (11422362).

Almost surely, 2^45661223 is an apocalyptic number.

45661223 is a deficient number, since it is larger than the sum of its proper divisors (28225).

45661223 is a wasteful number, since it uses less digits than its factorization.

45661223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28224.

The product of its digits is 8640, while the sum is 29.

The square root of 45661223 is about 6757.3088578220. The cubic root of 45661223 is about 357.4230143778.

Adding to 45661223 its reverse (32216654), we get a palindrome (77877877).

The spelling of 45661223 in words is "forty-five million, six hundred sixty-one thousand, two hundred twenty-three".