172403801 has 2 divisors, whose sum is σ = 172403802. Its totient is φ = 172403800.

The previous prime is 172403773. The next prime is 172403807. The reversal of 172403801 is 108304271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145829776 + 26574025 = 12076^2 + 5155^2 .

It is a cyclic number.

It is not a de Polignac number, because 172403801 - 2¹⁴ = 172387417 is a prime.

It is not a weakly prime, because it can be changed into another prime (172403807) 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, 86201900 + 86201901.

It is an arithmetic number, because the mean of its divisors is an integer number (86201901).

Almost surely, 2^172403801 is an apocalyptic number.

It is an amenable number.

172403801 is a deficient number, since it is larger than the sum of its proper divisors (1).

172403801 is an equidigital number, since it uses as much as digits as its factorization.

172403801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 172403801 is about 13130.2627924958. The cubic root of 172403801 is about 556.5646414827.

The spelling of 172403801 in words is "one hundred seventy-two million, four hundred three thousand, eight hundred one".