145807173 has 6 divisors (see below), whose sum is σ = 210610374. Its totient is φ = 97204776.

The previous prime is 145807171. The next prime is 145807183. The reversal of 145807173 is 371708541.

145807173 is a `hidden beast` number, since 1 + 4 + 580 + 7 + 1 + 73 = 666.

It can be written as a sum of positive squares in only one way, i.e., 80245764 + 65561409 = 8958^2 + 8097^2 .

It is not a de Polignac number, because 145807173 - 2¹ = 145807171 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145807171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8100390 + ... + 8100407.

It is an arithmetic number, because the mean of its divisors is an integer number (35101729).

Almost surely, 2^145807173 is an apocalyptic number.

It is an amenable number.

145807173 is a deficient number, since it is larger than the sum of its proper divisors (64803201).

145807173 is a wasteful number, since it uses less digits than its factorization.

145807173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16200803 (or 16200800 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 145807173 is about 12075.0640992087. The cubic root of 145807173 is about 526.3318240039.

The spelling of 145807173 in words is "one hundred forty-five million, eight hundred seven thousand, one hundred seventy-three".