79173541 has 2 divisors, whose sum is σ = 79173542. Its totient is φ = 79173540.

The previous prime is 79173503. The next prime is 79173553. The reversal of 79173541 is 14537197.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46922500 + 32251041 = 6850^2 + 5679^2 .

It is a cyclic number.

It is not a de Polignac number, because 79173541 - 2¹³ = 79165349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79173541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79173571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39586770 + 39586771.

It is an arithmetic number, because the mean of its divisors is an integer number (39586771).

Almost surely, 2^79173541 is an apocalyptic number.

It is an amenable number.

79173541 is a deficient number, since it is larger than the sum of its proper divisors (1).

79173541 is an equidigital number, since it uses as much as digits as its factorization.

79173541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26460, while the sum is 37.

The square root of 79173541 is about 8897.9515058242. The cubic root of 79173541 is about 429.3980056350.

The spelling of 79173541 in words is "seventy-nine million, one hundred seventy-three thousand, five hundred forty-one".