45001643 has 2 divisors, whose sum is σ = 45001644. Its totient is φ = 45001642.

The previous prime is 45001603. The next prime is 45001651. The reversal of 45001643 is 34610054.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45001643 - 2¹⁰ = 45000619 is a prime.

It is not a weakly prime, because it can be changed into another prime (45001603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22500821 + 22500822.

It is an arithmetic number, because the mean of its divisors is an integer number (22500822).

Almost surely, 2^45001643 is an apocalyptic number.

45001643 is a deficient number, since it is larger than the sum of its proper divisors (1).

45001643 is an equidigital number, since it uses as much as digits as its factorization.

45001643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 45001643 is about 6708.3263933712. The cubic root of 45001643 is about 355.6936592672.

Adding to 45001643 its reverse (34610054), we get a palindrome (79611697).

The spelling of 45001643 in words is "forty-five million, one thousand, six hundred forty-three".