81048041 has 2 divisors, whose sum is σ = 81048042. Its totient is φ = 81048040.

The previous prime is 81048029. The next prime is 81048049. The reversal of 81048041 is 14084018.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60762025 + 20286016 = 7795^2 + 4504^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-81048041 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 81048041.

It is not a weakly prime, because it can be changed into another prime (81048049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40524020 + 40524021.

It is an arithmetic number, because the mean of its divisors is an integer number (40524021).

Almost surely, 2^81048041 is an apocalyptic number.

It is an amenable number.

81048041 is a deficient number, since it is larger than the sum of its proper divisors (1).

81048041 is an equidigital number, since it uses as much as digits as its factorization.

81048041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 81048041 is about 9002.6685488248. The cubic root of 81048041 is about 432.7603938306.

The spelling of 81048041 in words is "eighty-one million, forty-eight thousand, forty-one".