79165511 has 2 divisors, whose sum is σ = 79165512. Its totient is φ = 79165510.

The previous prime is 79165487. The next prime is 79165553. The reversal of 79165511 is 11556197.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (11556197) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79165511 - 2¹⁸ = 78903367 is a prime.

It is a super-2 number, since 2×79165511² = 12534356263782242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79165591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39582755 + 39582756.

It is an arithmetic number, because the mean of its divisors is an integer number (39582756).

Almost surely, 2^79165511 is an apocalyptic number.

79165511 is a deficient number, since it is larger than the sum of its proper divisors (1).

79165511 is an equidigital number, since it uses as much as digits as its factorization.

79165511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9450, while the sum is 35.

The square root of 79165511 is about 8897.5002669289. The cubic root of 79165511 is about 429.3834882322.

The spelling of 79165511 in words is "seventy-nine million, one hundred sixty-five thousand, five hundred eleven".