2159774 has 4 divisors (see below), whose sum is σ = 3239664. Its totient is φ = 1079886.

The previous prime is 2159771. The next prime is 2159779. The reversal of 2159774 is 4779512.

2159774 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2159771) 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 as a sum of consecutive naturals, namely, 539942 + ... + 539945.

It is an arithmetic number, because the mean of its divisors is an integer number (809916).

2^2159774 is an apocalyptic number.

2159774 is a deficient number, since it is larger than the sum of its proper divisors (1079890).

2159774 is a wasteful number, since it uses less digits than its factorization.

2159774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1079889.

The product of its digits is 17640, while the sum is 35.

The square root of 2159774 is about 1469.6169568973. The cubic root of 2159774 is about 129.2615728906.

It can be divided in two parts, 21 and 59774, that added together give a palindrome (59795).

The spelling of 2159774 in words is "two million, one hundred fifty-nine thousand, seven hundred seventy-four".