172922507 has 2 divisors, whose sum is σ = 172922508. Its totient is φ = 172922506.

The previous prime is 172922459. The next prime is 172922527. The reversal of 172922507 is 705229271.

172922507 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 not a de Polignac number, because 172922507 - 2¹⁸ = 172660363 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (172922527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86461253 + 86461254.

It is an arithmetic number, because the mean of its divisors is an integer number (86461254).

Almost surely, 2^172922507 is an apocalyptic number.

172922507 is a deficient number, since it is larger than the sum of its proper divisors (1).

172922507 is an equidigital number, since it uses as much as digits as its factorization.

172922507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 172922507 is about 13150.0002661597. Note that the first 3 decimals coincide. The cubic root of 172922507 is about 557.1222555890.

The spelling of 172922507 in words is "one hundred seventy-two million, nine hundred twenty-two thousand, five hundred seven".