40561361 has 8 divisors (see below), whose sum is σ = 43002624. Its totient is φ = 38190960.

The previous prime is 40561319. The next prime is 40561363. The reversal of 40561361 is 16316504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40561361 - 2¹⁰ = 40560337 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40561361.

It is not an unprimeable number, because it can be changed into a prime (40561363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16535 + ... + 18828.

It is an arithmetic number, because the mean of its divisors is an integer number (5375328).

Almost surely, 2^40561361 is an apocalyptic number.

It is an amenable number.

40561361 is a deficient number, since it is larger than the sum of its proper divisors (2441263).

40561361 is a wasteful number, since it uses less digits than its factorization.

40561361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35431.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 40561361 is about 6368.7801814790. The cubic root of 40561361 is about 343.5876193508.

Adding to 40561361 its reverse (16316504), we get a palindrome (56877865).

The spelling of 40561361 in words is "forty million, five hundred sixty-one thousand, three hundred sixty-one".