145092171 has 8 divisors (see below), whose sum is σ = 221092864. Its totient is φ = 82909800.

The previous prime is 145092139. The next prime is 145092173. The reversal of 145092171 is 171290541.

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

It is not a de Polignac number, because 145092171 - 2⁵ = 145092139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145092173) 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, 3454555 + ... + 3454596.

It is an arithmetic number, because the mean of its divisors is an integer number (27636608).

Almost surely, 2^145092171 is an apocalyptic number.

145092171 is a deficient number, since it is larger than the sum of its proper divisors (76000693).

145092171 is an equidigital number, since it uses as much as digits as its factorization.

145092171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6909161.

The product of its (nonzero) digits is 2520, while the sum is 30.

The square root of 145092171 is about 12045.4211632471. The cubic root of 145092171 is about 525.4700805555.

The spelling of 145092171 in words is "one hundred forty-five million, ninety-two thousand, one hundred seventy-one".