172848997 has 2 divisors, whose sum is σ = 172848998. Its totient is φ = 172848996.

The previous prime is 172848983. The next prime is 172849007. The reversal of 172848997 is 799848271.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96216481 + 76632516 = 9809^2 + 8754^2 .

It is a cyclic number.

It is not a de Polignac number, because 172848997 - 2⁷ = 172848869 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 (172848967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86424498 + 86424499.

It is an arithmetic number, because the mean of its divisors is an integer number (86424499).

Almost surely, 2^172848997 is an apocalyptic number.

It is an amenable number.

172848997 is a deficient number, since it is larger than the sum of its proper divisors (1).

172848997 is an equidigital number, since it uses as much as digits as its factorization.

172848997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2032128, while the sum is 55.

The square root of 172848997 is about 13147.2049120716. The cubic root of 172848997 is about 557.0432994864.

The spelling of 172848997 in words is "one hundred seventy-two million, eight hundred forty-eight thousand, nine hundred ninety-seven".