43525145 has 4 divisors (see below), whose sum is σ = 52230180. Its totient is φ = 34820112.

The previous prime is 43525133. The next prime is 43525169. The reversal of 43525145 is 54152534.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17799961 + 25725184 = 4219^2 + 5072^2 .

It is a cyclic number.

It is not a de Polignac number, because 43525145 - 2¹⁴ = 43508761 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4352510 + ... + 4352519.

It is an arithmetic number, because the mean of its divisors is an integer number (13057545).

Almost surely, 2^43525145 is an apocalyptic number.

It is an amenable number.

43525145 is a deficient number, since it is larger than the sum of its proper divisors (8705035).

43525145 is an equidigital number, since it uses as much as digits as its factorization.

43525145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8705034.

The product of its digits is 12000, while the sum is 29.

The square root of 43525145 is about 6597.3589412734. The cubic root of 43525145 is about 351.7602345553.

Adding to 43525145 its reverse (54152534), we get a palindrome (97677679).

The spelling of 43525145 in words is "forty-three million, five hundred twenty-five thousand, one hundred forty-five".