43541091 has 16 divisors (see below), whose sum is σ = 70369920. Its totient is φ = 26388360.

The previous prime is 43541059. The next prime is 43541101. The reversal of 43541091 is 19014534.

It is not a de Polignac number, because 43541091 - 2⁵ = 43541059 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (43541021) 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 15 ways as a sum of consecutive naturals, for example, 73005 + ... + 73598.

It is an arithmetic number, because the mean of its divisors is an integer number (4398120).

Almost surely, 2^43541091 is an apocalyptic number.

43541091 is a deficient number, since it is larger than the sum of its proper divisors (26828829).

43541091 is a wasteful number, since it uses less digits than its factorization.

43541091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146623 (or 146617 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 43541091 is about 6598.5673445074. The cubic root of 43541091 is about 351.8031866147.

It can be divided in two parts, 4354 and 1091, that added together give a palindrome (5445).

The spelling of 43541091 in words is "forty-three million, five hundred forty-one thousand, ninety-one".