2156353 has 4 divisors (see below), whose sum is σ = 2230740. Its totient is φ = 2081968.

The previous prime is 2156351. The next prime is 2156359. The reversal of 2156353 is 3536512.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 535824 + 1620529 = 732^2 + 1273^2 .

It is not a de Polignac number, because 2156353 - 2¹ = 2156351 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2156351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37150 + ... + 37207.

It is an arithmetic number, because the mean of its divisors is an integer number (557685).

2^2156353 is an apocalyptic number.

It is an amenable number.

2156353 is a deficient number, since it is larger than the sum of its proper divisors (74387).

2156353 is an equidigital number, since it uses as much as digits as its factorization.

2156353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74386.

The product of its digits is 2700, while the sum is 25.

The square root of 2156353 is about 1468.4525869091. The cubic root of 2156353 is about 129.1932883502.

The spelling of 2156353 in words is "two million, one hundred fifty-six thousand, three hundred fifty-three".