41531261 has 6 divisors (see below), whose sum is σ = 43416030. Its totient is φ = 39725048.

The previous prime is 41531257. The next prime is 41531263. The reversal of 41531261 is 16213514.

It can be written as a sum of positive squares in only one way, i.e., 40883236 + 648025 = 6394^2 + 805^2 .

It is not a de Polignac number, because 41531261 - 2² = 41531257 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41531263) 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, 38726 + ... + 39783.

It is an arithmetic number, because the mean of its divisors is an integer number (7236005).

Almost surely, 2^41531261 is an apocalyptic number.

It is an amenable number.

41531261 is a deficient number, since it is larger than the sum of its proper divisors (1884769).

41531261 is an equidigital number, since it uses as much as digits as its factorization.

41531261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78555 (or 78532 counting only the distinct ones).

The product of its digits is 720, while the sum is 23.

The square root of 41531261 is about 6444.4752307694. The cubic root of 41531261 is about 346.3046894548.

Adding to 41531261 its reverse (16213514), we get a palindrome (57744775).

The spelling of 41531261 in words is "forty-one million, five hundred thirty-one thousand, two hundred sixty-one".