172523034 has 20 divisors (see below), whose sum is σ = 386579754. Its totient is φ = 57507624.

The previous prime is 172523033. The next prime is 172523051. The reversal of 172523034 is 430325271.

It can be written as a sum of positive squares in only one way, i.e., 140067225 + 32455809 = 11835^2 + 5697^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 172522989 and 172523007.

It is not an unprimeable number, because it can be changed into a prime (172523033) 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 9 ways as a sum of consecutive naturals, for example, 532317 + ... + 532640.

Almost surely, 2^172523034 is an apocalyptic number.

172523034 is an abundant number, since it is smaller than the sum of its proper divisors (214056720).

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

172523034 is a wasteful number, since it uses less digits than its factorization.

172523034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1064971 (or 1064962 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 172523034 is about 13134.8023966864. The cubic root of 172523034 is about 556.6929170373.

The spelling of 172523034 in words is "one hundred seventy-two million, five hundred twenty-three thousand, thirty-four".