45005812 has 6 divisors (see below), whose sum is σ = 78760178. Its totient is φ = 22502904.

The previous prime is 45005809. The next prime is 45005819. The reversal of 45005812 is 21850054.

It can be written as a sum of positive squares in only one way, i.e., 38266596 + 6739216 = 6186^2 + 2596^2 .

It is a super-2 number, since 2×45005812² = 4051046227558688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45005819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5625723 + ... + 5625730.

Almost surely, 2^45005812 is an apocalyptic number.

It is an amenable number.

45005812 is a deficient number, since it is larger than the sum of its proper divisors (33754366).

45005812 is a wasteful number, since it uses less digits than its factorization.

45005812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11251457 (or 11251455 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 45005812 is about 6708.6371194155. The cubic root of 45005812 is about 355.7046428742.

Adding to 45005812 its reverse (21850054), we get a palindrome (66855866).

The spelling of 45005812 in words is "forty-five million, five thousand, eight hundred twelve".