845545 has 8 divisors (see below), whose sum is σ = 1020096. Its totient is φ = 672816.

The previous prime is 845531. The next prime is 845567. The reversal of 845545 is 545548.

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 845545 - 2¹¹ = 843497 is a prime.

It is a Duffinian 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, 994 + ... + 1636.

It is an arithmetic number, because the mean of its divisors is an integer number (127512).

2⁸⁴⁵⁵⁴⁵ is an apocalyptic number.

It is an amenable number.

845545 is a deficient number, since it is larger than the sum of its proper divisors (174551).

845545 is a wasteful number, since it uses less digits than its factorization.

845545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911.

The product of its digits is 16000, while the sum is 31.

The square root of 845545 is about 919.5352086788. The cubic root of 845545 is about 94.5610404140.

The spelling of 845545 in words is "eight hundred forty-five thousand, five hundred forty-five".