172061247 has 8 divisors (see below), whose sum is σ = 229855744. Its totient is φ = 114487128.

The previous prime is 172061209. The next prime is 172061249. The reversal of 172061247 is 742160271.

172061247 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 172061247 - 2¹⁰ = 172060223 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 (172061249) 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, 53263 + ... + 56400.

It is an arithmetic number, because the mean of its divisors is an integer number (28731968).

Almost surely, 2^172061247 is an apocalyptic number.

172061247 is a deficient number, since it is larger than the sum of its proper divisors (57794497).

172061247 is a wasteful number, since it uses less digits than its factorization.

172061247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110189.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 172061247 is about 13117.2118607576. The cubic root of 172061247 is about 556.1957790519.

The spelling of 172061247 in words is "one hundred seventy-two million, sixty-one thousand, two hundred forty-seven".