172272203 has 4 divisors (see below), whose sum is σ = 182405880. Its totient is φ = 162138528.

The previous prime is 172272197. The next prime is 172272223. The reversal of 172272203 is 302272271.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 302272271 = 7 ⋅43181753.

It is a cyclic number.

It is not a de Polignac number, because 172272203 - 2⁸ = 172271947 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (172272223) 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, 5066813 + ... + 5066846.

It is an arithmetic number, because the mean of its divisors is an integer number (45601470).

Almost surely, 2^172272203 is an apocalyptic number.

172272203 is a deficient number, since it is larger than the sum of its proper divisors (10133677).

172272203 is a wasteful number, since it uses less digits than its factorization.

172272203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10133676.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 172272203 is about 13125.2505880840. The cubic root of 172272203 is about 556.4229944949.

The spelling of 172272203 in words is "one hundred seventy-two million, two hundred seventy-two thousand, two hundred three".