41791781 has 2 divisors, whose sum is σ = 41791782. Its totient is φ = 41791780.

The previous prime is 41791753. The next prime is 41791787. The reversal of 41791781 is 18719714.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34035556 + 7756225 = 5834^2 + 2785^2 .

It is a cyclic number.

It is not a de Polignac number, because 41791781 - 2¹⁰ = 41790757 is a prime.

It is a super-2 number, since 2×41791781² = 3493105918303922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41791787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20895890 + 20895891.

It is an arithmetic number, because the mean of its divisors is an integer number (20895891).

Almost surely, 2^41791781 is an apocalyptic number.

It is an amenable number.

41791781 is a deficient number, since it is larger than the sum of its proper divisors (1).

41791781 is an equidigital number, since it uses as much as digits as its factorization.

41791781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14112, while the sum is 38.

The square root of 41791781 is about 6464.6562940345. The cubic root of 41791781 is about 347.0272881728.

The spelling of 41791781 in words is "forty-one million, seven hundred ninety-one thousand, seven hundred eighty-one".