43125531 has 8 divisors (see below), whose sum is σ = 57552144. Its totient is φ = 28724640.

The previous prime is 43125503. The next prime is 43125541. The reversal of 43125531 is 13552134.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 43125531 - 2⁵ = 43125499 is a prime.

It is a super-2 number, since 2×43125531² = 3719622848063922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (43125541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2100 + ... + 9521.

It is an arithmetic number, because the mean of its divisors is an integer number (7194018).

Almost surely, 2^43125531 is an apocalyptic number.

43125531 is a deficient number, since it is larger than the sum of its proper divisors (14426613).

43125531 is a wasteful number, since it uses less digits than its factorization.

43125531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12861.

The product of its digits is 1800, while the sum is 24.

The square root of 43125531 is about 6567.0031978064. The cubic root of 43125531 is about 350.6803934775.

Adding to 43125531 its reverse (13552134), we get a palindrome (56677665).

The spelling of 43125531 in words is "forty-three million, one hundred twenty-five thousand, five hundred thirty-one".