40561005 has 8 divisors (see below), whose sum is σ = 64897632. Its totient is φ = 21632528.

The previous prime is 40560901. The next prime is 40561007. The reversal of 40561005 is 50016504.

It is a happy number.

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 40561005 - 2¹⁵ = 40528237 is a prime.

It is a super-2 number, since 2×40561005² = 3290390253220050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40561007) 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, 1352019 + ... + 1352048.

It is an arithmetic number, because the mean of its divisors is an integer number (8112204).

Almost surely, 2^40561005 is an apocalyptic number.

It is an amenable number.

40561005 is a deficient number, since it is larger than the sum of its proper divisors (24336627).

40561005 is a wasteful number, since it uses less digits than its factorization.

40561005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2704075.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 40561005 is about 6368.7522325806. The cubic root of 40561005 is about 343.5866141449.

Adding to 40561005 its reverse (50016504), we get a palindrome (90577509).

The spelling of 40561005 in words is "forty million, five hundred sixty-one thousand, five".