172772293 has 4 divisors (see below), whose sum is σ = 172864800. Its totient is φ = 172679788.

The previous prime is 172772287. The next prime is 172772333. The reversal of 172772293 is 392277271.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 392277271 = 1303 ⋅301057.

It is a cyclic number.

It is not a de Polignac number, because 172772293 - 2¹³ = 172764101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172772213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43393 + ... + 47206.

It is an arithmetic number, because the mean of its divisors is an integer number (43216200).

Almost surely, 2^172772293 is an apocalyptic number.

It is an amenable number.

172772293 is a deficient number, since it is larger than the sum of its proper divisors (92507).

172772293 is an equidigital number, since it uses as much as digits as its factorization.

172772293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92506.

The product of its digits is 74088, while the sum is 40.

The square root of 172772293 is about 13144.2874664243. The cubic root of 172772293 is about 556.9608888817.

The spelling of 172772293 in words is "one hundred seventy-two million, seven hundred seventy-two thousand, two hundred ninety-three".