2056369 has 4 divisors (see below), whose sum is σ = 2350144. Its totient is φ = 1762596.

The previous prime is 2056363. The next prime is 2056381. The reversal of 2056369 is 9636502.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2056369 - 2¹⁹ = 1532081 is a prime.

It is a super-2 number, since 2×2056369² = 8457306928322, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

2056369 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2056369.

It is not an unprimeable number, because it can be changed into a prime (2056363) 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 in 3 ways as a sum of consecutive naturals, for example, 146877 + ... + 146890.

It is an arithmetic number, because the mean of its divisors is an integer number (587536).

2^2056369 is an apocalyptic number.

It is an amenable number.

2056369 is a deficient number, since it is larger than the sum of its proper divisors (293775).

2056369 is an equidigital number, since it uses as much as digits as its factorization.

2056369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293774.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 2056369 is about 1434.0045327683. The cubic root of 2056369 is about 127.1648303082.

The spelling of 2056369 in words is "two million, fifty-six thousand, three hundred sixty-nine".