172268357 has 2 divisors, whose sum is σ = 172268358. Its totient is φ = 172268356.

The previous prime is 172268353. The next prime is 172268417. The reversal of 172268357 is 753862271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120802081 + 51466276 = 10991^2 + 7174^2 .

It is an emirp because it is prime and its reverse (753862271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 172268357 - 2² = 172268353 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172268353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86134178 + 86134179.

It is an arithmetic number, because the mean of its divisors is an integer number (86134179).

Almost surely, 2^172268357 is an apocalyptic number.

It is an amenable number.

172268357 is a deficient number, since it is larger than the sum of its proper divisors (1).

172268357 is an equidigital number, since it uses as much as digits as its factorization.

172268357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141120, while the sum is 41.

The square root of 172268357 is about 13125.1040757778. The cubic root of 172268357 is about 556.4188537248.

The spelling of 172268357 in words is "one hundred seventy-two million, two hundred sixty-eight thousand, three hundred fifty-seven".