145567217 has 8 divisors (see below), whose sum is σ = 148275840. Its totient is φ = 142880400.

The previous prime is 145567127. The next prime is 145567241. The reversal of 145567217 is 712765541.

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 145567217 - 2¹⁰ = 145566193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145567267) 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, 8342 + ... + 18992.

It is an arithmetic number, because the mean of its divisors is an integer number (18534480).

Almost surely, 2^145567217 is an apocalyptic number.

It is an amenable number.

145567217 is a deficient number, since it is larger than the sum of its proper divisors (2708623).

145567217 is a wasteful number, since it uses less digits than its factorization.

145567217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10903.

The product of its digits is 58800, while the sum is 38.

The square root of 145567217 is about 12065.1239943898. The cubic root of 145567217 is about 526.0429360104.

The spelling of 145567217 in words is "one hundred forty-five million, five hundred sixty-seven thousand, two hundred seventeen".