172148545 has 32 divisors (see below), whose sum is σ = 229049856. Its totient is φ = 123648000.

The previous prime is 172148533. The next prime is 172148551. The reversal of 172148545 is 545841271.

It is not a de Polignac number, because 172148545 - 2⁹ = 172148033 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 163270 + ... + 164320.

It is an arithmetic number, because the mean of its divisors is an integer number (7157808).

Almost surely, 2^172148545 is an apocalyptic number.

It is an amenable number.

172148545 is a deficient number, since it is larger than the sum of its proper divisors (56901311).

172148545 is a wasteful number, since it uses less digits than its factorization.

172148545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1161.

The product of its digits is 44800, while the sum is 37.

The square root of 172148545 is about 13120.5390514262. The cubic root of 172148545 is about 556.2898280618.

The spelling of 172148545 in words is "one hundred seventy-two million, one hundred forty-eight thousand, five hundred forty-five".