43550825 has 6 divisors (see below), whose sum is σ = 54003054. Its totient is φ = 34840640.

The previous prime is 43550809. The next prime is 43550827. The reversal of 43550825 is 52805534.

It can be written as a sum of positive squares in 3 ways, for example, as 1183744 + 42367081 = 1088^2 + 6509^2 .

It is not a de Polignac number, because 43550825 - 2⁴ = 43550809 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43550791 and 43550800.

It is not an unprimeable number, because it can be changed into a prime (43550827) 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, 870992 + ... + 871041.

It is an arithmetic number, because the mean of its divisors is an integer number (9000509).

Almost surely, 2^43550825 is an apocalyptic number.

It is an amenable number.

43550825 is a deficient number, since it is larger than the sum of its proper divisors (10452229).

43550825 is a wasteful number, since it uses less digits than its factorization.

43550825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1742043 (or 1742038 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

The square root of 43550825 is about 6599.3048876378. The cubic root of 43550825 is about 351.8294009101.

The spelling of 43550825 in words is "forty-three million, five hundred fifty thousand, eight hundred twenty-five".