40833561 has 4 divisors (see below), whose sum is σ = 54444752. Its totient is φ = 27222372.

The previous prime is 40833539. The next prime is 40833563. The reversal of 40833561 is 16533804.

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 not a de Polignac number, because 40833561 - 2¹⁰ = 40832537 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40833563) 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, 6805591 + ... + 6805596.

It is an arithmetic number, because the mean of its divisors is an integer number (13611188).

Almost surely, 2^40833561 is an apocalyptic number.

It is an amenable number.

40833561 is a deficient number, since it is larger than the sum of its proper divisors (13611191).

40833561 is a wasteful number, since it uses less digits than its factorization.

40833561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13611190.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 40833561 is about 6390.1143182262. The cubic root of 40833561 is about 344.3544913638.

The spelling of 40833561 in words is "forty million, eight hundred thirty-three thousand, five hundred sixty-one".