172645485 has 16 divisors (see below), whose sum is σ = 277476864. Its totient is φ = 91662912.

The previous prime is 172645483. The next prime is 172645507. The reversal of 172645485 is 584546271.

It is a happy number.

172645485 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 172645485 - 2¹ = 172645483 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172645483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22462 + ... + 29151.

It is an arithmetic number, because the mean of its divisors is an integer number (17342304).

Almost surely, 2^172645485 is an apocalyptic number.

172645485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

172645485 is a deficient number, since it is larger than the sum of its proper divisors (104831379).

172645485 is a wasteful number, since it uses less digits than its factorization.

172645485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51844.

The product of its digits is 268800, while the sum is 42.

The square root of 172645485 is about 13139.4628885659. The cubic root of 172645485 is about 556.8245931416.

The spelling of 172645485 in words is "one hundred seventy-two million, six hundred forty-five thousand, four hundred eighty-five".