41661971 has 4 divisors (see below), whose sum is σ = 44866752. Its totient is φ = 38457192.

The previous prime is 41661943. The next prime is 41661979. The reversal of 41661971 is 17916614.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-41661971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (41661979) 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, 1602371 + ... + 1602396.

It is an arithmetic number, because the mean of its divisors is an integer number (11216688).

Almost surely, 2^41661971 is an apocalyptic number.

41661971 is a deficient number, since it is larger than the sum of its proper divisors (3204781).

41661971 is a wasteful number, since it uses less digits than its factorization.

41661971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3204780.

The product of its digits is 9072, while the sum is 35.

The square root of 41661971 is about 6454.6085086549. The cubic root of 41661971 is about 346.6676135124.

The spelling of 41661971 in words is "forty-one million, six hundred sixty-one thousand, nine hundred seventy-one".