41781591 has 6 divisors (see below), whose sum is σ = 60351200. Its totient is φ = 27854388.

The previous prime is 41781577. The next prime is 41781601. The reversal of 41781591 is 19518714.

It is not a de Polignac number, because 41781591 - 2⁷ = 41781463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41781541) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2321191 + ... + 2321208.

Almost surely, 2^41781591 is an apocalyptic number.

41781591 is a deficient number, since it is larger than the sum of its proper divisors (18569609).

41781591 is a wasteful number, since it uses less digits than its factorization.

41781591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4642405 (or 4642402 counting only the distinct ones).

The product of its digits is 10080, while the sum is 36.

The square root of 41781591 is about 6463.8681143724. The cubic root of 41781591 is about 346.9990809079. Note that the first 3 decimals are identical.

The spelling of 41781591 in words is "forty-one million, seven hundred eighty-one thousand, five hundred ninety-one".