172497601 has 2 divisors, whose sum is σ = 172497602. Its totient is φ = 172497600.

The previous prime is 172497557. The next prime is 172497607. The reversal of 172497601 is 106794271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 169624576 + 2873025 = 13024^2 + 1695^2 .

It is a cyclic number.

It is not a de Polignac number, because 172497601 - 2¹¹ = 172495553 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (172497607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86248800 + 86248801.

It is an arithmetic number, because the mean of its divisors is an integer number (86248801).

Almost surely, 2^172497601 is an apocalyptic number.

It is an amenable number.

172497601 is a deficient number, since it is larger than the sum of its proper divisors (1).

172497601 is an equidigital number, since it uses as much as digits as its factorization.

172497601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 172497601 is about 13133.8342078770. The cubic root of 172497601 is about 556.6655601749.

The spelling of 172497601 in words is "one hundred seventy-two million, four hundred ninety-seven thousand, six hundred one".