145629173 has 8 divisors (see below), whose sum is σ = 148073400. Its totient is φ = 143204800.

The previous prime is 145629139. The next prime is 145629181. The reversal of 145629173 is 371926541.

It can be written as a sum of positive squares in 4 ways, for example, as 41242084 + 104387089 = 6422^2 + 10217^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145629173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145629193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10211 + ... + 19887.

It is an arithmetic number, because the mean of its divisors is an integer number (18509175).

Almost surely, 2^145629173 is an apocalyptic number.

It is an amenable number.

145629173 is a deficient number, since it is larger than the sum of its proper divisors (2444227).

145629173 is a wasteful number, since it uses less digits than its factorization.

145629173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9927.

The product of its digits is 45360, while the sum is 38.

The square root of 145629173 is about 12067.6912870690. The cubic root of 145629173 is about 526.1175565055.

The spelling of 145629173 in words is "one hundred forty-five million, six hundred twenty-nine thousand, one hundred seventy-three".