172019055 has 32 divisors (see below), whose sum is σ = 297722880. Its totient is φ = 84309120.

The previous prime is 172019041. The next prime is 172019069. The reversal of 172019055 is 550910271.

172019055 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (172019041) and next prime (172019069).

It is not a de Polignac number, because 172019055 - 2⁶ = 172018991 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44760 + ... + 48450.

It is an arithmetic number, because the mean of its divisors is an integer number (9303840).

Almost surely, 2^172019055 is an apocalyptic number.

172019055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

172019055 is a deficient number, since it is larger than the sum of its proper divisors (125703825).

172019055 is a wasteful number, since it uses less digits than its factorization.

172019055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3951.

The product of its (nonzero) digits is 3150, while the sum is 30.

The square root of 172019055 is about 13115.6034935492. The cubic root of 172019055 is about 556.1503128180.

The spelling of 172019055 in words is "one hundred seventy-two million, nineteen thousand, fifty-five".