41201681 has 4 divisors (see below), whose sum is σ = 41277552. Its totient is φ = 41125812.

The previous prime is 41201669. The next prime is 41201689. The reversal of 41201681 is 18610214.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 41201681 - 2¹⁸ = 40939537 is a prime.

It is a super-2 number, since 2×41201681² = 3395157034451522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (41201689) 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, 37115 + ... + 38208.

It is an arithmetic number, because the mean of its divisors is an integer number (10319388).

Almost surely, 2^41201681 is an apocalyptic number.

It is an amenable number.

41201681 is a deficient number, since it is larger than the sum of its proper divisors (75871).

41201681 is an equidigital number, since it uses as much as digits as its factorization.

41201681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75870.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 41201681 is about 6418.8535580741. The cubic root of 41201681 is about 345.3861977833.

Adding to 41201681 its reverse (18610214), we get a palindrome (59811895).

The spelling of 41201681 in words is "forty-one million, two hundred one thousand, six hundred eighty-one".