172252397 has 2 divisors, whose sum is σ = 172252398. Its totient is φ = 172252396.

The previous prime is 172252361. The next prime is 172252403. The reversal of 172252397 is 793252271.

It is a happy number.

172252397 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 can be written as a sum of positive squares in only one way, i.e., 156100036 + 16152361 = 12494^2 + 4019^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172252397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 172252397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172252097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86126198 + 86126199.

It is an arithmetic number, because the mean of its divisors is an integer number (86126199).

Almost surely, 2^172252397 is an apocalyptic number.

It is an amenable number.

172252397 is a deficient number, since it is larger than the sum of its proper divisors (1).

172252397 is an equidigital number, since it uses as much as digits as its factorization.

172252397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 38.

The square root of 172252397 is about 13124.4960665162. The cubic root of 172252397 is about 556.4016698393.

The spelling of 172252397 in words is "one hundred seventy-two million, two hundred fifty-two thousand, three hundred ninety-seven".