40561433 has 4 divisors (see below), whose sum is σ = 44248848. Its totient is φ = 36874020.

The previous prime is 40561403. The next prime is 40561471. The reversal of 40561433 is 33416504.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40561433 - 2¹² = 40557337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40561403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1843691 + ... + 1843712.

It is an arithmetic number, because the mean of its divisors is an integer number (11062212).

Almost surely, 2^40561433 is an apocalyptic number.

It is an amenable number.

40561433 is a deficient number, since it is larger than the sum of its proper divisors (3687415).

40561433 is a wasteful number, since it uses less digits than its factorization.

40561433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3687414.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 40561433 is about 6368.7858340503. The cubic root of 40561433 is about 343.5878226501.

Adding to 40561433 its reverse (33416504), we get a palindrome (73977937).

Subtracting from 40561433 its reverse (33416504), we obtain a square (7144929 = 2673²).

The spelling of 40561433 in words is "forty million, five hundred sixty-one thousand, four hundred thirty-three".