172226707 has 2 divisors, whose sum is σ = 172226708. Its totient is φ = 172226706.

The previous prime is 172226687. The next prime is 172226713. The reversal of 172226707 is 707622271.

172226707 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172226707 is a prime.

It is not a weakly prime, because it can be changed into another prime (172226797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86113353 + 86113354.

It is an arithmetic number, because the mean of its divisors is an integer number (86113354).

Almost surely, 2^172226707 is an apocalyptic number.

172226707 is a deficient number, since it is larger than the sum of its proper divisors (1).

172226707 is an equidigital number, since it uses as much as digits as its factorization.

172226707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16464, while the sum is 34.

The square root of 172226707 is about 13123.5173257782. The cubic root of 172226707 is about 556.3740075836.

Adding to 172226707 its reverse (707622271), we get a palindrome (879848978).

The spelling of 172226707 in words is "one hundred seventy-two million, two hundred twenty-six thousand, seven hundred seven".