2154145 has 8 divisors (see below), whose sum is σ = 2954304. Its totient is φ = 1477104.

The previous prime is 2154143. The next prime is 2154161. The reversal of 2154145 is 5414512.

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 2154145 - 2¹ = 2154143 is a prime.

It is a Duffinian number.

2154145 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2154143) 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, 30739 + ... + 30808.

It is an arithmetic number, because the mean of its divisors is an integer number (369288).

2^2154145 is an apocalyptic number.

It is an amenable number.

2154145 is a deficient number, since it is larger than the sum of its proper divisors (800159).

2154145 is an equidigital number, since it uses as much as digits as its factorization.

2154145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61559.

The product of its digits is 800, while the sum is 22.

The square root of 2154145 is about 1467.7005825440. The cubic root of 2154145 is about 129.1491774216.

Adding to 2154145 its reverse (5414512), we get a palindrome (7568657).

The spelling of 2154145 in words is "two million, one hundred fifty-four thousand, one hundred forty-five".