172175058 has 80 divisors (see below), whose sum is σ = 429048576. Its totient is φ = 51161760.

The previous prime is 172175057. The next prime is 172175077. The reversal of 172175058 is 850571271.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (172175057) 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 39 ways as a sum of consecutive naturals, for example, 93535 + ... + 95357.

Almost surely, 2^172175058 is an apocalyptic number.

172175058 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 172175058, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214524288).

172175058 is an abundant number, since it is smaller than the sum of its proper divisors (256873518).

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

172175058 is a wasteful number, since it uses less digits than its factorization.

172175058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1901 (or 1892 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 36.

The square root of 172175058 is about 13121.5493749786. The cubic root of 172175058 is about 556.3183850949.

The spelling of 172175058 in words is "one hundred seventy-two million, one hundred seventy-five thousand, fifty-eight".