43540572 has 24 divisors (see below), whose sum is σ = 102583936. Its totient is φ = 14372208.

The previous prime is 43540561. The next prime is 43540573. The reversal of 43540572 is 27504534.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43540573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16378 + ... + 18849.

Almost surely, 2^43540572 is an apocalyptic number.

It is an amenable number.

43540572 is an abundant number, since it is smaller than the sum of its proper divisors (59043364).

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

43540572 is a wasteful number, since it uses less digits than its factorization.

43540572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35337 (or 35335 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 30.

The square root of 43540572 is about 6598.5280176718. The cubic root of 43540572 is about 351.8017888042.

The spelling of 43540572 in words is "forty-three million, five hundred forty thousand, five hundred seventy-two".