172563401 has 2 divisors, whose sum is σ = 172563402. Its totient is φ = 172563400.

The previous prime is 172563397. The next prime is 172563407. The reversal of 172563401 is 104365271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127351225 + 45212176 = 11285^2 + 6724^2 .

It is a cyclic number.

It is not a de Polignac number, because 172563401 - 2² = 172563397 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (172563407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86281700 + 86281701.

It is an arithmetic number, because the mean of its divisors is an integer number (86281701).

Almost surely, 2^172563401 is an apocalyptic number.

It is an amenable number.

172563401 is a deficient number, since it is larger than the sum of its proper divisors (1).

172563401 is an equidigital number, since it uses as much as digits as its factorization.

172563401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 172563401 is about 13136.3389496465. The cubic root of 172563401 is about 556.7363320527.

The spelling of 172563401 in words is "one hundred seventy-two million, five hundred sixty-three thousand, four hundred one".