41431561 has 2 divisors, whose sum is σ = 41431562. Its totient is φ = 41431560.

The previous prime is 41431549. The next prime is 41431573. The reversal of 41431561 is 16513414.

It is a balanced prime because it is at equal distance from previous prime (41431549) and next prime (41431573).

It can be written as a sum of positive squares in only one way, i.e., 38675961 + 2755600 = 6219^2 + 1660^2 .

It is a cyclic number.

It is not a de Polignac number, because 41431561 - 2⁷ = 41431433 is a prime.

It is not a weakly prime, because it can be changed into another prime (41431541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20715780 + 20715781.

It is an arithmetic number, because the mean of its divisors is an integer number (20715781).

Almost surely, 2^41431561 is an apocalyptic number.

It is an amenable number.

41431561 is a deficient number, since it is larger than the sum of its proper divisors (1).

41431561 is an equidigital number, since it uses as much as digits as its factorization.

41431561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 25.

The square root of 41431561 is about 6436.7352749667. The cubic root of 41431561 is about 346.0273542475.

Adding to 41431561 its reverse (16513414), we get a palindrome (57944975).

The spelling of 41431561 in words is "forty-one million, four hundred thirty-one thousand, five hundred sixty-one".