45136643 has 2 divisors, whose sum is σ = 45136644. Its totient is φ = 45136642.

The previous prime is 45136631. The next prime is 45136657. The reversal of 45136643 is 34663154.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45136643 - 2¹⁶ = 45071107 is a prime.

It is not a weakly prime, because it can be changed into another prime (45136843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22568321 + 22568322.

It is an arithmetic number, because the mean of its divisors is an integer number (22568322).

Almost surely, 2^45136643 is an apocalyptic number.

45136643 is a deficient number, since it is larger than the sum of its proper divisors (1).

45136643 is an equidigital number, since it uses as much as digits as its factorization.

45136643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 32.

The square root of 45136643 is about 6718.3809805637. The cubic root of 45136643 is about 356.0489848641.

Adding to 45136643 its reverse (34663154), we get a palindrome (79799797).

The spelling of 45136643 in words is "forty-five million, one hundred thirty-six thousand, six hundred forty-three".