45189623 has 2 divisors, whose sum is σ = 45189624. Its totient is φ = 45189622.

The previous prime is 45189611. The next prime is 45189653. The reversal of 45189623 is 32698154.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45189623 - 2¹⁰ = 45188599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45189653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22594811 + 22594812.

It is an arithmetic number, because the mean of its divisors is an integer number (22594812).

Almost surely, 2^45189623 is an apocalyptic number.

45189623 is a deficient number, since it is larger than the sum of its proper divisors (1).

45189623 is an equidigital number, since it uses as much as digits as its factorization.

45189623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 38.

The square root of 45189623 is about 6722.3227384588. The cubic root of 45189623 is about 356.1882368356.

It can be divided in two parts, 4518 and 9623, that added together give a palindrome (14141).

The spelling of 45189623 in words is "forty-five million, one hundred eighty-nine thousand, six hundred twenty-three".