45421443 has 12 divisors (see below), whose sum is σ = 65715000. Its totient is φ = 30231936.

The previous prime is 45421421. The next prime is 45421451. The reversal of 45421443 is 34412454.

It is a happy number.

It is not a de Polignac number, because 45421443 - 2⁶ = 45421379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45421483) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2308 + ... + 9806.

It is an arithmetic number, because the mean of its divisors is an integer number (5476250).

Almost surely, 2^45421443 is an apocalyptic number.

45421443 is a deficient number, since it is larger than the sum of its proper divisors (20293557).

45421443 is a wasteful number, since it uses less digits than its factorization.

45421443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8178 (or 8175 counting only the distinct ones).

The product of its digits is 7680, while the sum is 27.

The square root of 45421443 is about 6739.5432337808. The cubic root of 45421443 is about 356.7962729063.

Adding to 45421443 its reverse (34412454), we get a palindrome (79833897).

The spelling of 45421443 in words is "forty-five million, four hundred twenty-one thousand, four hundred forty-three".