2156349 has 8 divisors (see below), whose sum is σ = 3096352. Its totient is φ = 1326960.

The previous prime is 2156339. The next prime is 2156351. The reversal of 2156349 is 9436512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2156349 - 2⁵ = 2156317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27607 + ... + 27684.

It is an arithmetic number, because the mean of its divisors is an integer number (387044).

2^2156349 is an apocalyptic number.

It is an amenable number.

2156349 is a deficient number, since it is larger than the sum of its proper divisors (940003).

2156349 is a wasteful number, since it uses less digits than its factorization.

2156349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55307.

The product of its digits is 6480, while the sum is 30.

The square root of 2156349 is about 1468.4512249305. The cubic root of 2156349 is about 129.1932084664.

It can be divided in two parts, 21563 and 49, that added together give a palindrome (21612).

The spelling of 2156349 in words is "two million, one hundred fifty-six thousand, three hundred forty-nine".