172075965 has 32 divisors (see below), whose sum is σ = 281062656. Its totient is φ = 89879040.

The previous prime is 172075961. The next prime is 172075987. The reversal of 172075965 is 569570271.

It is not a de Polignac number, because 172075965 - 2² = 172075961 is a prime.

It is a super-2 number, since 2×172075965² = 59220275461362450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172075961) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 182395 + ... + 183335.

It is an arithmetic number, because the mean of its divisors is an integer number (8783208).

Almost surely, 2^172075965 is an apocalyptic number.

172075965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

172075965 is a deficient number, since it is larger than the sum of its proper divisors (108986691).

172075965 is a wasteful number, since it uses less digits than its factorization.

172075965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1189.

The product of its (nonzero) digits is 132300, while the sum is 42.

The square root of 172075965 is about 13117.7728673735. The cubic root of 172075965 is about 556.2116374671.

The spelling of 172075965 in words is "one hundred seventy-two million, seventy-five thousand, nine hundred sixty-five".