45623213 has 4 divisors (see below), whose sum is σ = 45755040. Its totient is φ = 45491388.

The previous prime is 45623203. The next prime is 45623219. The reversal of 45623213 is 31232654.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31232654 = 2 ⋅15616327.

It is a cyclic number.

It is not a de Polignac number, because 45623213 - 2¹⁰ = 45622189 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45623219) 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, 65393 + ... + 66086.

It is an arithmetic number, because the mean of its divisors is an integer number (11438760).

Almost surely, 2^45623213 is an apocalyptic number.

It is an amenable number.

45623213 is a deficient number, since it is larger than the sum of its proper divisors (131827).

45623213 is a wasteful number, since it uses less digits than its factorization.

45623213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131826.

The product of its digits is 4320, while the sum is 26.

The square root of 45623213 is about 6754.4957620832. The cubic root of 45623213 is about 357.3238097037.

Adding to 45623213 its reverse (31232654), we get a palindrome (76855867).

The spelling of 45623213 in words is "forty-five million, six hundred twenty-three thousand, two hundred thirteen".