79566541 has 2 divisors, whose sum is σ = 79566542. Its totient is φ = 79566540.

The previous prime is 79566523. The next prime is 79566563. The reversal of 79566541 is 14566597.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76912900 + 2653641 = 8770^2 + 1629^2 .

It is a cyclic number.

It is not a de Polignac number, because 79566541 - 2⁹ = 79566029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79566521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39783270 + 39783271.

It is an arithmetic number, because the mean of its divisors is an integer number (39783271).

Almost surely, 2^79566541 is an apocalyptic number.

It is an amenable number.

79566541 is a deficient number, since it is larger than the sum of its proper divisors (1).

79566541 is an equidigital number, since it uses as much as digits as its factorization.

79566541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 226800, while the sum is 43.

The square root of 79566541 is about 8920.0079035839. The cubic root of 79566541 is about 430.1073123187.

The spelling of 79566541 in words is "seventy-nine million, five hundred sixty-six thousand, five hundred forty-one".