43520427 has 12 divisors (see below), whose sum is σ = 63344424. Its totient is φ = 28791360.

The previous prime is 43520423. The next prime is 43520441. The reversal of 43520427 is 72402534.

43520427 is a `hidden beast` number, since 435 + 204 + 27 = 666.

It is not a de Polignac number, because 43520427 - 2² = 43520423 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43520427.

It is not an unprimeable number, because it can be changed into a prime (43520423) 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 11 ways as a sum of consecutive naturals, for example, 17278 + ... + 19635.

It is an arithmetic number, because the mean of its divisors is an integer number (5278702).

Almost surely, 2^43520427 is an apocalyptic number.

43520427 is a deficient number, since it is larger than the sum of its proper divisors (19823997).

43520427 is a wasteful number, since it uses less digits than its factorization.

43520427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37050 (or 37047 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 43520427 is about 6597.0013642563. The cubic root of 43520427 is about 351.7475241649.

The spelling of 43520427 in words is "forty-three million, five hundred twenty thousand, four hundred twenty-seven".