2156454 has 24 divisors (see below), whose sum is σ = 4773600. Its totient is φ = 703248.

The previous prime is 2156447. The next prime is 2156459. The reversal of 2156454 is 4546512.

2156454 is a `hidden beast` number, since 2 + 15 + 645 + 4 = 666.

2156454 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156459) 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 11 ways as a sum of consecutive naturals, for example, 429 + ... + 2120.

It is an arithmetic number, because the mean of its divisors is an integer number (198900).

2^2156454 is an apocalyptic number.

2156454 is an abundant number, since it is smaller than the sum of its proper divisors (2617146).

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

2156454 is a wasteful number, since it uses less digits than its factorization.

2156454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2604 (or 2601 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 2156454 is about 1468.4869764489. The cubic root of 2156454 is about 129.1953053852.

The spelling of 2156454 in words is "two million, one hundred fifty-six thousand, four hundred fifty-four".