45640033 has 4 divisors (see below), whose sum is σ = 48042160. Its totient is φ = 43237908.

The previous prime is 45640031. The next prime is 45640051. The reversal of 45640033 is 33004654.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33004654 = 2 ⋅16502327.

It is a cyclic number.

It is not a de Polignac number, because 45640033 - 2¹ = 45640031 is a prime.

It is a super-2 number, since 2×45640033² = 4166025224482178, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45640031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1201035 + ... + 1201072.

It is an arithmetic number, because the mean of its divisors is an integer number (12010540).

Almost surely, 2^45640033 is an apocalyptic number.

It is an amenable number.

45640033 is a deficient number, since it is larger than the sum of its proper divisors (2402127).

45640033 is a wasteful number, since it uses less digits than its factorization.

45640033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2402126.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 45640033 is about 6755.7407439895. The cubic root of 45640033 is about 357.3677160666.

Adding to 45640033 its reverse (33004654), we get a palindrome (78644687).

The spelling of 45640033 in words is "forty-five million, six hundred forty thousand, thirty-three".