172013353 has 2 divisors, whose sum is σ = 172013354. Its totient is φ = 172013352.

The previous prime is 172013339. The next prime is 172013357. The reversal of 172013353 is 353310271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 161722089 + 10291264 = 12717^2 + 3208^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172013353 is a prime.

It is a super-2 number, since 2×172013353² = 59177187220605218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (172013357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86006676 + 86006677.

It is an arithmetic number, because the mean of its divisors is an integer number (86006677).

Almost surely, 2^172013353 is an apocalyptic number.

It is an amenable number.

172013353 is a deficient number, since it is larger than the sum of its proper divisors (1).

172013353 is an equidigital number, since it uses as much as digits as its factorization.

172013353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1890, while the sum is 25.

The square root of 172013353 is about 13115.3861170764. The cubic root of 172013353 is about 556.1441677543.

The spelling of 172013353 in words is "one hundred seventy-two million, thirteen thousand, three hundred fifty-three".