2154522 has 16 divisors (see below), whose sum is σ = 4368960. Its totient is φ = 708192.

The previous prime is 2154499. The next prime is 2154533. The reversal of 2154522 is 2254512.

It is a happy number.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2022 + ... + 2897.

It is an arithmetic number, because the mean of its divisors is an integer number (273060).

2^2154522 is an apocalyptic number.

2154522 is an abundant number, since it is smaller than the sum of its proper divisors (2214438).

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

2154522 is a wasteful number, since it uses less digits than its factorization.

2154522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4997.

The product of its digits is 800, while the sum is 21.

The square root of 2154522 is about 1467.8290091152. The cubic root of 2154522 is about 129.1567111763.

The spelling of 2154522 in words is "two million, one hundred fifty-four thousand, five hundred twenty-two".