2154747 has 8 divisors (see below), whose sum is σ = 3283456. Its totient is φ = 1231272.

The previous prime is 2154743. The next prime is 2154749. The reversal of 2154747 is 7474512.

2154747 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2154747 - 2² = 2154743 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2154743) 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 7 ways as a sum of consecutive naturals, for example, 51283 + ... + 51324.

It is an arithmetic number, because the mean of its divisors is an integer number (410432).

2^2154747 is an apocalyptic number.

2154747 is a deficient number, since it is larger than the sum of its proper divisors (1128709).

2154747 is a wasteful number, since it uses less digits than its factorization.

2154747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102617.

The product of its digits is 7840, while the sum is 30.

The square root of 2154747 is about 1467.9056509190. The cubic root of 2154747 is about 129.1612070302.

The spelling of 2154747 in words is "two million, one hundred fifty-four thousand, seven hundred forty-seven".