172555127 has 2 divisors, whose sum is σ = 172555128. Its totient is φ = 172555126.

The previous prime is 172555111. The next prime is 172555139. The reversal of 172555127 is 721555271.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 172555127 - 2⁴ = 172555111 is a prime.

It is a super-2 number, since 2×172555127² = 59550543707972258, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172555147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86277563 + 86277564.

It is an arithmetic number, because the mean of its divisors is an integer number (86277564).

Almost surely, 2^172555127 is an apocalyptic number.

172555127 is a deficient number, since it is larger than the sum of its proper divisors (1).

172555127 is an equidigital number, since it uses as much as digits as its factorization.

172555127 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24500, while the sum is 35.

The square root of 172555127 is about 13136.0240179439. The cubic root of 172555127 is about 556.7274338545.

The spelling of 172555127 in words is "one hundred seventy-two million, five hundred fifty-five thousand, one hundred twenty-seven".