80172558 has 16 divisors (see below), whose sum is σ = 178161360. Its totient is φ = 26724168.

The previous prime is 80172551. The next prime is 80172569. The reversal of 80172558 is 85527108.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80172551) 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 7 ways as a sum of consecutive naturals, for example, 742285 + ... + 742392.

It is an arithmetic number, because the mean of its divisors is an integer number (11135085).

Almost surely, 2^80172558 is an apocalyptic number.

80172558 is an abundant number, since it is smaller than the sum of its proper divisors (97988802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80172558 is a wasteful number, since it uses less digits than its factorization.

80172558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1484688 (or 1484682 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 36.

The square root of 80172558 is about 8953.9129993540. The cubic root of 80172558 is about 431.1965196440.

The spelling of 80172558 in words is "eighty million, one hundred seventy-two thousand, five hundred fifty-eight".