172155383 has 2 divisors, whose sum is σ = 172155384. Its totient is φ = 172155382.

The previous prime is 172155341. The next prime is 172155443. The reversal of 172155383 is 383551271.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 172155383 - 2¹⁴ = 172138999 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 (172155083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86077691 + 86077692.

It is an arithmetic number, because the mean of its divisors is an integer number (86077692).

Almost surely, 2^172155383 is an apocalyptic number.

172155383 is a deficient number, since it is larger than the sum of its proper divisors (1).

172155383 is an equidigital number, since it uses as much as digits as its factorization.

172155383 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25200, while the sum is 35.

The square root of 172155383 is about 13120.7996326443. The cubic root of 172155383 is about 556.2971935214.

The spelling of 172155383 in words is "one hundred seventy-two million, one hundred fifty-five thousand, three hundred eighty-three".