2156154 has 64 divisors (see below), whose sum is σ = 5806080. Its totient is φ = 515520.

The previous prime is 2156123. The next prime is 2156159. The reversal of 2156154 is 4516512.

2156154 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156159) 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 31 ways as a sum of consecutive naturals, for example, 5827 + ... + 6185.

It is an arithmetic number, because the mean of its divisors is an integer number (90720).

2^2156154 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2156154, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2903040).

2156154 is an abundant number, since it is smaller than the sum of its proper divisors (3649926).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2156154 is a wasteful number, since it uses less digits than its factorization.

2156154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395.

The product of its digits is 1200, while the sum is 24.

The square root of 2156154 is about 1468.3848269442. The cubic root of 2156154 is about 129.1893140079.

The spelling of 2156154 in words is "two million, one hundred fifty-six thousand, one hundred fifty-four".