145817147 has 8 divisors (see below), whose sum is σ = 167176416. Its totient is φ = 124589952.

The previous prime is 145817141. The next prime is 145817179. The reversal of 145817147 is 741718541.

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 145817147 - 2⁴ = 145817131 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145817147.

It is not an unprimeable number, because it can be changed into a prime (145817141) 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, 30638 + ... + 35075.

It is an arithmetic number, because the mean of its divisors is an integer number (20897052).

Almost surely, 2^145817147 is an apocalyptic number.

145817147 is a deficient number, since it is larger than the sum of its proper divisors (21359269).

145817147 is an equidigital number, since it uses as much as digits as its factorization.

145817147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66037.

The product of its digits is 31360, while the sum is 38.

The square root of 145817147 is about 12075.4770920241. The cubic root of 145817147 is about 526.3438250457.

The spelling of 145817147 in words is "one hundred forty-five million, eight hundred seventeen thousand, one hundred forty-seven".