45008813 has 8 divisors (see below), whose sum is σ = 45654840. Its totient is φ = 44366080.

The previous prime is 45008779. The next prime is 45008827. The reversal of 45008813 is 31880054.

It can be written as a sum of positive squares in 4 ways, for example, as 24964 + 44983849 = 158^2 + 6707^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 45008813 - 2¹⁶ = 44943277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45008833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40481 + ... + 41577.

It is an arithmetic number, because the mean of its divisors is an integer number (5706855).

Almost surely, 2^45008813 is an apocalyptic number.

It is an amenable number.

45008813 is a deficient number, since it is larger than the sum of its proper divisors (646027).

45008813 is a wasteful number, since it uses less digits than its factorization.

45008813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1647.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 45008813 is about 6708.8607825770. The cubic root of 45008813 is about 355.7125488598.

Adding to 45008813 its reverse (31880054), we get a palindrome (76888867).

The spelling of 45008813 in words is "forty-five million, eight thousand, eight hundred thirteen".