2151056 has 20 divisors (see below), whose sum is σ = 4192812. Its totient is φ = 1069056.

The previous prime is 2151031. The next prime is 2151073. The reversal of 2151056 is 6501512.

It can be written as a sum of positive squares in 2 ways, for example, as 1478656 + 672400 = 1216^2 + 820^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3440 + ... + 4016.

2^2151056 is an apocalyptic number.

It is an amenable number.

2151056 is a deficient number, since it is larger than the sum of its proper divisors (2041756).

2151056 is a wasteful number, since it uses less digits than its factorization.

2151056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818 (or 812 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 2151056 is about 1466.6478786675. The cubic root of 2151056 is about 129.0874154615.

Adding to 2151056 its reverse (6501512), we get a palindrome (8652568).

The spelling of 2151056 in words is "two million, one hundred fifty-one thousand, fifty-six".