172422773 has 2 divisors, whose sum is σ = 172422774. Its totient is φ = 172422772.

The previous prime is 172422769. The next prime is 172422781. The reversal of 172422773 is 377224271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108534724 + 63888049 = 10418^2 + 7993^2 .

It is a cyclic number.

It is not a de Polignac number, because 172422773 - 2² = 172422769 is a prime.

It is a super-2 number, since 2×172422773² = 59459225298019058, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172422703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86211386 + 86211387.

It is an arithmetic number, because the mean of its divisors is an integer number (86211387).

Almost surely, 2^172422773 is an apocalyptic number.

It is an amenable number.

172422773 is a deficient number, since it is larger than the sum of its proper divisors (1).

172422773 is an equidigital number, since it uses as much as digits as its factorization.

172422773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32928, while the sum is 35.

The square root of 172422773 is about 13130.9852257932. The cubic root of 172422773 is about 556.5850562629.

The spelling of 172422773 in words is "one hundred seventy-two million, four hundred twenty-two thousand, seven hundred seventy-three".