79801571 has 6 divisors (see below), whose sum is σ = 81223980. Its totient is φ = 78381548.

The previous prime is 79801531. The next prime is 79801597. The reversal of 79801571 is 17510897.

It is not a de Polignac number, because 79801571 - 2¹⁴ = 79785187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79801511) 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 in 5 ways as a sum of consecutive naturals, for example, 68036 + ... + 69198.

It is an arithmetic number, because the mean of its divisors is an integer number (13537330).

Almost surely, 2^79801571 is an apocalyptic number.

79801571 is a deficient number, since it is larger than the sum of its proper divisors (1422409).

79801571 is an frugal number, since it uses more digits than its factorization.

79801571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2385 (or 1222 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 38.

The square root of 79801571 is about 8933.1725047712. The cubic root of 79801571 is about 430.5303911209.

The spelling of 79801571 in words is "seventy-nine million, eight hundred one thousand, five hundred seventy-one".