2161354 has 16 divisors (see below), whose sum is σ = 3531528. Its totient is φ = 986112.

The previous prime is 2161349. The next prime is 2161373. The reversal of 2161354 is 4531612.

2161354 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1896129 + 265225 = 1377^2 + 515^2 .

It is a super-2 number, since 2×2161354² = 9342902226632, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 2094 + ... + 2950.

2^2161354 is an apocalyptic number.

2161354 is a deficient number, since it is larger than the sum of its proper divisors (1370174).

2161354 is a wasteful number, since it uses less digits than its factorization.

2161354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 969.

The product of its digits is 720, while the sum is 22.

The square root of 2161354 is about 1470.1544136586. The cubic root of 2161354 is about 129.2930859876.

Adding to 2161354 its reverse (4531612), we get a palindrome (6692966).

The spelling of 2161354 in words is "two million, one hundred sixty-one thousand, three hundred fifty-four".