41981566 has 24 divisors (see below), whose sum is σ = 69785784. Its totient is φ = 18784560.

The previous prime is 41981549. The next prime is 41981573. The reversal of 41981566 is 66518914.

41981566 = T₉₆₄ + T₉₆₅ + ... + T₁₀₄₆.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 151420 + ... + 151696.

It is an arithmetic number, because the mean of its divisors is an integer number (2907741).

Almost surely, 2^41981566 is an apocalyptic number.

41981566 is a deficient number, since it is larger than the sum of its proper divisors (27804218).

41981566 is a wasteful number, since it uses less digits than its factorization.

41981566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456 (or 373 counting only the distinct ones).

The product of its digits is 51840, while the sum is 40.

The square root of 41981566 is about 6479.3183283429. The cubic root of 41981566 is about 347.5518022251.

The spelling of 41981566 in words is "forty-one million, nine hundred eighty-one thousand, five hundred sixty-six".