2154863 has 4 divisors (see below), whose sum is σ = 2175888. Its totient is φ = 2133840.

The previous prime is 2154853. The next prime is 2154871. The reversal of 2154863 is 3684512.

2154863 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2154863 - 2¹⁰ = 2153839 is a prime.

It is a d-powerful number, because it can be written as 2¹³ + 1 + 5⁹ + 4⁷ + 8 + 6 + 3¹¹ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10358 + ... + 10563.

It is an arithmetic number, because the mean of its divisors is an integer number (543972).

2^2154863 is an apocalyptic number.

2154863 is a deficient number, since it is larger than the sum of its proper divisors (21025).

2154863 is a wasteful number, since it uses less digits than its factorization.

2154863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21024.

The product of its digits is 5760, while the sum is 29.

The square root of 2154863 is about 1467.9451624635. The cubic root of 2154863 is about 129.1635247704.

The spelling of 2154863 in words is "two million, one hundred fifty-four thousand, eight hundred sixty-three".