172136353 has 6 divisors (see below), whose sum is σ = 176234514. Its totient is φ = 168131376.

The previous prime is 172136351. The next prime is 172136359. The reversal of 172136353 is 353631271.

It can be written as a sum of positive squares in only one way, i.e., 133795489 + 38340864 = 11567^2 + 6192^2 .

It is not a de Polignac number, because 172136353 - 2¹ = 172136351 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172136351) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 44700 + ... + 48397.

It is an arithmetic number, because the mean of its divisors is an integer number (29372419).

Almost surely, 2^172136353 is an apocalyptic number.

It is an amenable number.

172136353 is a deficient number, since it is larger than the sum of its proper divisors (4098161).

172136353 is an frugal number, since it uses more digits than its factorization.

172136353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93183 (or 93140 counting only the distinct ones).

The product of its digits is 11340, while the sum is 31.

The square root of 172136353 is about 13120.0744281425. The cubic root of 172136353 is about 556.2766951292.

The spelling of 172136353 in words is "one hundred seventy-two million, one hundred thirty-six thousand, three hundred fifty-three".