805122541 has 2 divisors, whose sum is σ = 805122542. Its totient is φ = 805122540.

The previous prime is 805122529. The next prime is 805122547. The reversal of 805122541 is 145221508.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 455993316 + 349129225 = 21354^2 + 18685^2 .

It is a cyclic number.

It is not a de Polignac number, because 805122541 - 2⁵ = 805122509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (805122547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402561270 + 402561271.

It is an arithmetic number, because the mean of its divisors is an integer number (402561271).

Almost surely, 2^805122541 is an apocalyptic number.

It is an amenable number.

805122541 is a deficient number, since it is larger than the sum of its proper divisors (1).

805122541 is an equidigital number, since it uses as much as digits as its factorization.

805122541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3200, while the sum is 28.

The square root of 805122541 is about 28374.6813374177. The cubic root of 805122541 is about 930.2949467230.

The spelling of 805122541 in words is "eight hundred five million, one hundred twenty-two thousand, five hundred forty-one".