43525051 has 4 divisors (see below), whose sum is σ = 43662672. Its totient is φ = 43387432.

The previous prime is 43525033. The next prime is 43525087. The reversal of 43525051 is 15052534.

43525051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 43525051 - 2¹⁵ = 43492283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43525091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68335 + ... + 68968.

It is an arithmetic number, because the mean of its divisors is an integer number (10915668).

Almost surely, 2^43525051 is an apocalyptic number.

43525051 is a deficient number, since it is larger than the sum of its proper divisors (137621).

43525051 is a wasteful number, since it uses less digits than its factorization.

43525051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137620.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 43525051 is about 6597.3518172067. The cubic root of 43525051 is about 351.7599813263.

Adding to 43525051 its reverse (15052534), we get a palindrome (58577585).

The spelling of 43525051 in words is "forty-three million, five hundred twenty-five thousand, fifty-one".