40561201 has 4 divisors (see below), whose sum is σ = 42947172. Its totient is φ = 38175232.

The previous prime is 40561159. The next prime is 40561211. The reversal of 40561201 is 10216504.

40561201 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 can be written as a sum of positive squares in 2 ways, for example, as 15800625 + 24760576 = 3975^2 + 4976^2 .

It is a cyclic number.

It is not a de Polignac number, because 40561201 - 2²³ = 32172593 is a prime.

It is a super-2 number, since 2×40561201² = 3290422053124802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40561211) 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, 1192960 + ... + 1192993.

It is an arithmetic number, because the mean of its divisors is an integer number (10736793).

Almost surely, 2^40561201 is an apocalyptic number.

It is an amenable number.

40561201 is a deficient number, since it is larger than the sum of its proper divisors (2385971).

40561201 is a wasteful number, since it uses less digits than its factorization.

40561201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2385970.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 40561201 is about 6368.7676201915. The cubic root of 40561201 is about 343.5871675736.

Adding to 40561201 its reverse (10216504), we get a palindrome (50777705).

The spelling of 40561201 in words is "forty million, five hundred sixty-one thousand, two hundred one".