45540212 has 24 divisors (see below), whose sum is σ = 85821120. Its totient is φ = 21065600.

The previous prime is 45540203. The next prime is 45540223. The reversal of 45540212 is 21204554.

It is a happy number.

It is a super-3 number, since 3×45540212³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1664 + ... + 9687.

It is an arithmetic number, because the mean of its divisors is an integer number (3575880).

Almost surely, 2^45540212 is an apocalyptic number.

It is an amenable number.

45540212 is a deficient number, since it is larger than the sum of its proper divisors (40280908).

45540212 is a wasteful number, since it uses less digits than its factorization.

45540212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11431 (or 11429 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 45540212 is about 6748.3488350855. The cubic root of 45540212 is about 357.1069885197.

Adding to 45540212 its reverse (21204554), we get a palindrome (66744766).

The spelling of 45540212 in words is "forty-five million, five hundred forty thousand, two hundred twelve".