172054017 has 8 divisors (see below), whose sum is σ = 254894880. Its totient is φ = 114702660.

The previous prime is 172054009. The next prime is 172054019. The reversal of 172054017 is 710450271.

It is not a de Polignac number, because 172054017 - 2³ = 172054009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 6372371 = 172054017 / (1 + 7 + 2 + 0 + 5 + 4 + 0 + 1 + 7).

It is not an unprimeable number, because it can be changed into a prime (172054019) 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, 3186159 + ... + 3186212.

It is an arithmetic number, because the mean of its divisors is an integer number (31861860).

Almost surely, 2^172054017 is an apocalyptic number.

It is an amenable number.

172054017 is a deficient number, since it is larger than the sum of its proper divisors (82840863).

172054017 is an equidigital number, since it uses as much as digits as its factorization.

172054017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6372380 (or 6372374 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 27.

The square root of 172054017 is about 13116.9362657596. The cubic root of 172054017 is about 556.1879885086.

The spelling of 172054017 in words is "one hundred seventy-two million, fifty-four thousand, seventeen".