43138475 has 6 divisors (see below), whose sum is σ = 53491740. Its totient is φ = 34510760.

The previous prime is 43138451. The next prime is 43138477. The reversal of 43138475 is 57483134.

It is not a de Polignac number, because 43138475 - 2⁸ = 43138219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43138477) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 862745 + ... + 862794.

It is an arithmetic number, because the mean of its divisors is an integer number (8915290).

Almost surely, 2^43138475 is an apocalyptic number.

43138475 is a deficient number, since it is larger than the sum of its proper divisors (10353265).

43138475 is a wasteful number, since it uses less digits than its factorization.

43138475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1725549 (or 1725544 counting only the distinct ones).

The product of its digits is 40320, while the sum is 35.

The square root of 43138475 is about 6567.9886571157. The cubic root of 43138475 is about 350.7154751939.

The spelling of 43138475 in words is "forty-three million, one hundred thirty-eight thousand, four hundred seventy-five".