80172534 has 16 divisors (see below), whose sum is σ = 172679472. Its totient is φ = 24668448.

The previous prime is 80172529. The next prime is 80172539. The reversal of 80172534 is 43527108.

It is an interprime number because it is at equal distance from previous prime (80172529) and next prime (80172539).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80172539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 513849 + ... + 514004.

It is an arithmetic number, because the mean of its divisors is an integer number (10792467).

Almost surely, 2^80172534 is an apocalyptic number.

80172534 is an abundant number, since it is smaller than the sum of its proper divisors (92506938).

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

80172534 is a wasteful number, since it uses less digits than its factorization.

80172534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1027871.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 80172534 is about 8953.9116591577. The cubic root of 80172534 is about 431.1964766172.

The spelling of 80172534 in words is "eighty million, one hundred seventy-two thousand, five hundred thirty-four".