145917 has 12 divisors (see below), whose sum is σ = 217984. Its totient is φ = 93960.

The previous prime is 145903. The next prime is 145931. The reversal of 145917 is 719541.

It is an interprime number because it is at equal distance from previous prime (145903) and next prime (145931).

It is not a de Polignac number, because 145917 - 2⁸ = 145661 is a prime.

It is a Duffinian number.

145917 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 145917.

It is not an unprimeable number, because it can be changed into a prime (145967) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18 + ... + 540.

2¹⁴⁵⁹¹⁷ is an apocalyptic number.

It is an amenable number.

145917 is a deficient number, since it is larger than the sum of its proper divisors (72067).

145917 is a wasteful number, since it uses less digits than its factorization.

145917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560 (or 557 counting only the distinct ones).

The product of its digits is 1260, while the sum is 27.

The square root of 145917 is about 381.9908375865. The cubic root of 145917 is about 52.6463941276.

The spelling of 145917 in words is "one hundred forty-five thousand, nine hundred seventeen".