172661234 has 4 divisors (see below), whose sum is σ = 258991854. Its totient is φ = 86330616.

The previous prime is 172661233. The next prime is 172661249. The reversal of 172661234 is 432166271.

172661234 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 142444225 + 30217009 = 11935^2 + 5497^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 172661234.

It is not an unprimeable number, because it can be changed into a prime (172661233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43165307 + ... + 43165310.

Almost surely, 2^172661234 is an apocalyptic number.

172661234 is a deficient number, since it is larger than the sum of its proper divisors (86330620).

172661234 is an equidigital number, since it uses as much as digits as its factorization.

172661234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86330619.

The product of its digits is 12096, while the sum is 32.

The square root of 172661234 is about 13140.0621764130. The cubic root of 172661234 is about 556.8415241064.

The spelling of 172661234 in words is "one hundred seventy-two million, six hundred sixty-one thousand, two hundred thirty-four".