172411385 has 8 divisors (see below), whose sum is σ = 210797640. Its totient is φ = 135326464.

The previous prime is 172411373. The next prime is 172411387. The reversal of 172411385 is 583114271.

It can be written as a sum of positive squares in 4 ways, for example, as 71690089 + 100721296 = 8467^2 + 10036^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 172411385 - 2⁶ = 172411321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (172411387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325040 + ... + 325569.

It is an arithmetic number, because the mean of its divisors is an integer number (26349705).

Almost surely, 2^172411385 is an apocalyptic number.

It is an amenable number.

172411385 is a deficient number, since it is larger than the sum of its proper divisors (38386255).

172411385 is an equidigital number, since it uses as much as digits as its factorization.

172411385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650667.

The product of its digits is 6720, while the sum is 32.

The square root of 172411385 is about 13130.5515878047. The cubic root of 172411385 is about 556.5728024094.

The spelling of 172411385 in words is "one hundred seventy-two million, four hundred eleven thousand, three hundred eighty-five".