172505055 has 8 divisors (see below), whose sum is σ = 276008112. Its totient is φ = 92002688.

The previous prime is 172505041. The next prime is 172505077. The reversal of 172505055 is 550505271.

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 172505055 - 2¹² = 172500959 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5750154 + ... + 5750183.

It is an arithmetic number, because the mean of its divisors is an integer number (34501014).

Almost surely, 2^172505055 is an apocalyptic number.

172505055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

172505055 is a deficient number, since it is larger than the sum of its proper divisors (103503057).

172505055 is a wasteful number, since it uses less digits than its factorization.

172505055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11500345.

The product of its (nonzero) digits is 8750, while the sum is 30.

The square root of 172505055 is about 13134.1179757150. The cubic root of 172505055 is about 556.6735783063.

The spelling of 172505055 in words is "one hundred seventy-two million, five hundred five thousand, fifty-five".