2155446 has 12 divisors (see below), whose sum is σ = 4670172. Its totient is φ = 718476.

The previous prime is 2155429. The next prime is 2155451. The reversal of 2155446 is 6445512.

2155446 is a `hidden beast` number, since 215 + 5 + 446 = 666.

2155446 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 an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 59856 + ... + 59891.

It is an arithmetic number, because the mean of its divisors is an integer number (389181).

2^2155446 is an apocalyptic number.

2155446 is an abundant number, since it is smaller than the sum of its proper divisors (2514726).

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

2155446 is a wasteful number, since it uses less digits than its factorization.

2155446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119755 (or 119752 counting only the distinct ones).

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

The square root of 2155446 is about 1468.1437259342. The cubic root of 2155446 is about 129.1751721535.

It can be divided in two parts, 2155 and 446, that added together give a square (2601 = 51²).

The spelling of 2155446 in words is "two million, one hundred fifty-five thousand, four hundred forty-six".