145745 has 8 divisors (see below), whose sum is σ = 177216. Its totient is φ = 115056.

The previous prime is 145723. The next prime is 145753. The reversal of 145745 is 547541.

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 145745 - 2⁶ = 145681 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 374 + ... + 656.

It is an arithmetic number, because the mean of its divisors is an integer number (22152).

2¹⁴⁵⁷⁴⁵ is an apocalyptic number.

It is an amenable number.

145745 is a deficient number, since it is larger than the sum of its proper divisors (31471).

145745 is a wasteful number, since it uses less digits than its factorization.

145745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391.

The product of its digits is 2800, while the sum is 26.

The square root of 145745 is about 381.7656349123. The cubic root of 145745 is about 52.6257003083.

The spelling of 145745 in words is "one hundred forty-five thousand, seven hundred forty-five".