43545012 has 48 divisors (see below), whose sum is σ = 118323072. Its totient is φ = 12205440.

The previous prime is 43544989. The next prime is 43545043. The reversal of 43545012 is 21054534.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 439 + ... + 9342.

It is an arithmetic number, because the mean of its divisors is an integer number (2465064).

Almost surely, 2^43545012 is an apocalyptic number.

43545012 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43545012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59161536).

43545012 is an abundant number, since it is smaller than the sum of its proper divisors (74778060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

43545012 is a wasteful number, since it uses less digits than its factorization.

43545012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9848 (or 9846 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 43545012 is about 6598.8644477668. The cubic root of 43545012 is about 351.8137465927.

Adding to 43545012 its reverse (21054534), we get a palindrome (64599546).

The spelling of 43545012 in words is "forty-three million, five hundred forty-five thousand, twelve".