172208053 has 4 divisors (see below), whose sum is σ = 172389708. Its totient is φ = 172026400.

The previous prime is 172208051. The next prime is 172208089. The reversal of 172208053 is 350802271.

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

It can be written as a sum of positive squares in 2 ways, for example, as 30669444 + 141538609 = 5538^2 + 11897^2 .

It is a cyclic number.

It is not a de Polignac number, because 172208053 - 2¹ = 172208051 is a prime.

It is a super-2 number, since 2×172208053² = 59311227036101618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172208051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89398 + ... + 91303.

It is an arithmetic number, because the mean of its divisors is an integer number (43097427).

Almost surely, 2^172208053 is an apocalyptic number.

It is an amenable number.

172208053 is a deficient number, since it is larger than the sum of its proper divisors (181655).

172208053 is an equidigital number, since it uses as much as digits as its factorization.

172208053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181654.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 172208053 is about 13122.8065976757. The cubic root of 172208053 is about 556.3539197670.

The spelling of 172208053 in words is "one hundred seventy-two million, two hundred eight thousand, fifty-three".