41981563 has 4 divisors (see below), whose sum is σ = 45210928. Its totient is φ = 38752200.

The previous prime is 41981549. The next prime is 41981573. The reversal of 41981563 is 36518914.

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 41981563 - 2¹⁷ = 41850491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (41981573) 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, 1614663 + ... + 1614688.

It is an arithmetic number, because the mean of its divisors is an integer number (11302732).

Almost surely, 2^41981563 is an apocalyptic number.

41981563 is a deficient number, since it is larger than the sum of its proper divisors (3229365).

41981563 is a wasteful number, since it uses less digits than its factorization.

41981563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3229364.

The product of its digits is 25920, while the sum is 37.

The square root of 41981563 is about 6479.3180968370. The cubic root of 41981563 is about 347.5517939464.

The spelling of 41981563 in words is "forty-one million, nine hundred eighty-one thousand, five hundred sixty-three".