45144623 has 2 divisors, whose sum is σ = 45144624. Its totient is φ = 45144622.

The previous prime is 45144611. The next prime is 45144661. The reversal of 45144623 is 32644154.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45144623 - 2²⁰ = 44096047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45144683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22572311 + 22572312.

It is an arithmetic number, because the mean of its divisors is an integer number (22572312).

Almost surely, 2^45144623 is an apocalyptic number.

45144623 is a deficient number, since it is larger than the sum of its proper divisors (1).

45144623 is an equidigital number, since it uses as much as digits as its factorization.

45144623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 29.

The square root of 45144623 is about 6718.9748474005. The cubic root of 45144623 is about 356.0699663644.

Adding to 45144623 its reverse (32644154), we get a palindrome (77788777).

The spelling of 45144623 in words is "forty-five million, one hundred forty-four thousand, six hundred twenty-three".