145290173 has 8 divisors (see below), whose sum is σ = 166120320. Its totient is φ = 124478640.

The previous prime is 145290161. The next prime is 145290191. The reversal of 145290173 is 371092541.

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

It is a cyclic number.

It is not a de Polignac number, because 145290173 - 2¹² = 145286077 is a prime.

It is a super-2 number, since 2×145290173² = 42218468740739858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145290193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23243 + ... + 28823.

It is an arithmetic number, because the mean of its divisors is an integer number (20765040).

Almost surely, 2^145290173 is an apocalyptic number.

It is an amenable number.

145290173 is a deficient number, since it is larger than the sum of its proper divisors (20830147).

145290173 is an equidigital number, since it uses as much as digits as its factorization.

145290173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9307.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 145290173 is about 12053.6373348463. The cubic root of 145290173 is about 525.7090018647.

The spelling of 145290173 in words is "one hundred forty-five million, two hundred ninety thousand, one hundred seventy-three".