40533145 has 4 divisors (see below), whose sum is σ = 48639780. Its totient is φ = 32426512.

The previous prime is 40533139. The next prime is 40533173. The reversal of 40533145 is 54133504.

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 10634121 + 29899024 = 3261^2 + 5468^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40533145 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, 4053310 + ... + 4053319.

It is an arithmetic number, because the mean of its divisors is an integer number (12159945).

Almost surely, 2^40533145 is an apocalyptic number.

It is an amenable number.

40533145 is a deficient number, since it is larger than the sum of its proper divisors (8106635).

40533145 is an equidigital number, since it uses as much as digits as its factorization.

40533145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8106634.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 40533145 is about 6366.5646152380. The cubic root of 40533145 is about 343.5079300694.

Adding to 40533145 its reverse (54133504), we get a palindrome (94666649).

The spelling of 40533145 in words is "forty million, five hundred thirty-three thousand, one hundred forty-five".