2154772 has 12 divisors (see below), whose sum is σ = 3791200. Its totient is φ = 1071576.

The previous prime is 2154749. The next prime is 2154791. The reversal of 2154772 is 2774512.

It is a self number, because there is not a number n which added to its sum of digits gives 2154772.

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 3 ways as a sum of consecutive naturals, for example, 558 + ... + 2149.

2^2154772 is an apocalyptic number.

It is an amenable number.

2154772 is a deficient number, since it is larger than the sum of its proper divisors (1636428).

2154772 is a wasteful number, since it uses less digits than its factorization.

2154772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2910 (or 2908 counting only the distinct ones).

The product of its digits is 3920, while the sum is 28.

The square root of 2154772 is about 1467.9141664280. The cubic root of 2154772 is about 129.1617065502.

It can be divided in two parts, 2154 and 772, that added together give a triangular number (2926 = T₇₆).

The spelling of 2154772 in words is "two million, one hundred fifty-four thousand, seven hundred seventy-two".