41561851 has 4 divisors (see below), whose sum is σ = 43368912. Its totient is φ = 39754792.

The previous prime is 41561837. The next prime is 41561857. The reversal of 41561851 is 15816514.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 41561851 - 2¹¹ = 41559803 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (41561857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 903496 + ... + 903541.

It is an arithmetic number, because the mean of its divisors is an integer number (10842228).

Almost surely, 2^41561851 is an apocalyptic number.

41561851 is a deficient number, since it is larger than the sum of its proper divisors (1807061).

41561851 is a wasteful number, since it uses less digits than its factorization.

41561851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1807060.

The product of its digits is 4800, while the sum is 31.

The square root of 41561851 is about 6446.8481446363. The cubic root of 41561851 is about 346.3896925775.

The spelling of 41561851 in words is "forty-one million, five hundred sixty-one thousand, eight hundred fifty-one".