2185545 has 8 divisors (see below), whose sum is σ = 3496896. Its totient is φ = 1165616.

The previous prime is 2185541. The next prime is 2185567. The reversal of 2185545 is 5455812.

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 2185545 - 2² = 2185541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2185541) 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, 72837 + ... + 72866.

It is an arithmetic number, because the mean of its divisors is an integer number (437112).

2^2185545 is an apocalyptic number.

It is an amenable number.

2185545 is a deficient number, since it is larger than the sum of its proper divisors (1311351).

2185545 is a wasteful number, since it uses less digits than its factorization.

2185545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145711.

The product of its digits is 8000, while the sum is 30.

The square root of 2185545 is about 1478.3588874154. The cubic root of 2185545 is about 129.7736693021.

The spelling of 2185545 in words is "two million, one hundred eighty-five thousand, five hundred forty-five".