172471245 has 32 divisors (see below), whose sum is σ = 286112640. Its totient is φ = 88646400.

The previous prime is 172471241. The next prime is 172471249. The reversal of 172471245 is 542174271.

It is an interprime number because it is at equal distance from previous prime (172471241) and next prime (172471249).

It is not a de Polignac number, because 172471245 - 2² = 172471241 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172471241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59070 + ... + 61920.

It is an arithmetic number, because the mean of its divisors is an integer number (8941020).

Almost surely, 2^172471245 is an apocalyptic number.

172471245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

172471245 is a deficient number, since it is larger than the sum of its proper divisors (113641395).

172471245 is a wasteful number, since it uses less digits than its factorization.

172471245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3005.

The product of its digits is 15680, while the sum is 33.

The square root of 172471245 is about 13132.8308067987. The cubic root of 172471245 is about 556.6372076554.

The spelling of 172471245 in words is "one hundred seventy-two million, four hundred seventy-one thousand, two hundred forty-five".