43243497 has 16 divisors (see below), whose sum is σ = 69888960. Its totient is φ = 26208000.

The previous prime is 43243489. The next prime is 43243507. The reversal of 43243497 is 79434234.

It is not a de Polignac number, because 43243497 - 2³ = 43243489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43243457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72504 + ... + 73097.

It is an arithmetic number, because the mean of its divisors is an integer number (4368060).

Almost surely, 2^43243497 is an apocalyptic number.

It is an amenable number.

43243497 is a deficient number, since it is larger than the sum of its proper divisors (26645463).

43243497 is a wasteful number, since it uses less digits than its factorization.

43243497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145621 (or 145615 counting only the distinct ones).

The product of its digits is 72576, while the sum is 36.

The square root of 43243497 is about 6575.9787864621. The cubic root of 43243497 is about 350.9998538972. Note that the first 3 decimals are identical.

The spelling of 43243497 in words is "forty-three million, two hundred forty-three thousand, four hundred ninety-seven".