45243472 has 20 divisors (see below), whose sum is σ = 88896096. Its totient is φ = 22302560.

The previous prime is 45243463. The next prime is 45243481. The reversal of 45243472 is 27434254.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (45243463) and next prime (45243481).

It is a super-2 number, since 2×45243472² = 4093943517229568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18778 + ... + 21049.

Almost surely, 2^45243472 is an apocalyptic number.

It is an amenable number.

45243472 is a deficient number, since it is larger than the sum of its proper divisors (43652624).

45243472 is a wasteful number, since it uses less digits than its factorization.

45243472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39906 (or 39900 counting only the distinct ones).

The product of its digits is 26880, while the sum is 31.

The square root of 45243472 is about 6726.3267836167. The cubic root of 45243472 is about 356.3296613894.

The spelling of 45243472 in words is "forty-five million, two hundred forty-three thousand, four hundred seventy-two".