2151356 has 12 divisors (see below), whose sum is σ = 3784200. Its totient is φ = 1070160.

The previous prime is 2151353. The next prime is 2151377. The reversal of 2151356 is 6531512.

2151356 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151353) 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, 431 + ... + 2118.

It is an arithmetic number, because the mean of its divisors is an integer number (315350).

2^2151356 is an apocalyptic number.

It is an amenable number.

2151356 is a deficient number, since it is larger than the sum of its proper divisors (1632844).

2151356 is a wasteful number, since it uses less digits than its factorization.

2151356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2764 (or 2762 counting only the distinct ones).

The product of its digits is 900, while the sum is 23.

The square root of 2151356 is about 1466.7501491392. The cubic root of 2151356 is about 129.0934163009.

Adding to 2151356 its reverse (6531512), we get a palindrome (8682868).

The spelling of 2151356 in words is "two million, one hundred fifty-one thousand, three hundred fifty-six".