172277493 has 8 divisors (see below), whose sum is σ = 229858368. Its totient is φ = 114774144.

The previous prime is 172277477. The next prime is 172277527. The reversal of 172277493 is 394772271.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 172277493 - 2⁴ = 172277477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172277093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13980 + ... + 23237.

It is an arithmetic number, because the mean of its divisors is an integer number (28732296).

Almost surely, 2^172277493 is an apocalyptic number.

It is an amenable number.

172277493 is a deficient number, since it is larger than the sum of its proper divisors (57580875).

172277493 is a wasteful number, since it uses less digits than its factorization.

172277493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38763.

The product of its digits is 148176, while the sum is 42.

The square root of 172277493 is about 13125.4521064990. The cubic root of 172277493 is about 556.4286898372.

The spelling of 172277493 in words is "one hundred seventy-two million, two hundred seventy-seven thousand, four hundred ninety-three".