145804 has 6 divisors (see below), whose sum is σ = 255164. Its totient is φ = 72900.

The previous prime is 145799. The next prime is 145807. The reversal of 145804 is 408541.

It is not an unprimeable number, because it can be changed into a prime (145807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18222 + ... + 18229.

2¹⁴⁵⁸⁰⁴ is an apocalyptic number.

It is an amenable number.

145804 is a deficient number, since it is larger than the sum of its proper divisors (109360).

145804 is a wasteful number, since it uses less digits than its factorization.

145804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36455 (or 36453 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 145804 is about 381.8428996328. The cubic root of 145804 is about 52.6328006032.

It can be divided in two parts, 145 and 804, that added together give a palindrome (949).

The spelling of 145804 in words is "one hundred forty-five thousand, eight hundred four".