2181054 has 16 divisors (see below), whose sum is σ = 4376592. Its totient is φ = 724608.

The previous prime is 2181031. The next prime is 2181071. The reversal of 2181054 is 4501812.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2181054.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3252 + ... + 3864.

It is an arithmetic number, because the mean of its divisors is an integer number (273537).

2^2181054 is an apocalyptic number.

2181054 is an abundant number, since it is smaller than the sum of its proper divisors (2195538).

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

2181054 is a wasteful number, since it uses less digits than its factorization.

2181054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1211.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 2181054 is about 1476.8391923293. The cubic root of 2181054 is about 129.6847192223.

Adding to 2181054 its reverse (4501812), we get a palindrome (6682866).

The spelling of 2181054 in words is "two million, one hundred eighty-one thousand, fifty-four".