172055623 has 8 divisors (see below), whose sum is σ = 185265360. Its totient is φ = 159189120.

The previous prime is 172055509. The next prime is 172055627. The reversal of 172055623 is 326550271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 172055623 - 2¹³ = 172047431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172055627) 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, 84768 + ... + 86773.

It is an arithmetic number, because the mean of its divisors is an integer number (23158170).

Almost surely, 2^172055623 is an apocalyptic number.

172055623 is a deficient number, since it is larger than the sum of its proper divisors (13209737).

172055623 is a wasteful number, since it uses less digits than its factorization.

172055623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171617.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 172055623 is about 13116.9974841806. The cubic root of 172055623 is about 556.1897190409.

The spelling of 172055623 in words is "one hundred seventy-two million, fifty-five thousand, six hundred twenty-three".