153845 has 8 divisors (see below), whose sum is σ = 191160. Its totient is φ = 118720.

The previous prime is 153841. The next prime is 153871. The reversal of 153845 is 548351.

It can be written as a sum of positive squares in 4 ways, for example, as 24964 + 128881 = 158^2 + 359^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 153845 - 2² = 153841 is a prime.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153841) 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, 386 + ... + 675.

It is an arithmetic number, because the mean of its divisors is an integer number (23895).

2¹⁵³⁸⁴⁵ is an apocalyptic number.

It is an amenable number.

153845 is a deficient number, since it is larger than the sum of its proper divisors (37315).

153845 is a wasteful number, since it uses less digits than its factorization.

153845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095.

The product of its digits is 2400, while the sum is 26.

The square root of 153845 is about 392.2307994026. The cubic root of 153845 is about 53.5830950253.

It can be divided in two parts, 15 and 3845, that multiplied together give a palindrome (57675).

The spelling of 153845 in words is "one hundred fifty-three thousand, eight hundred forty-five".