2155234 has 8 divisors (see below), whose sum is σ = 3252060. Its totient is φ = 1071216.

The previous prime is 2155207. The next prime is 2155253. The reversal of 2155234 is 4325512.

It can be written as a sum of positive squares in 2 ways, for example, as 2030625 + 124609 = 1425^2 + 353^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2769 + ... + 3460.

2^2155234 is an apocalyptic number.

2155234 is a deficient number, since it is larger than the sum of its proper divisors (1096826).

2155234 is a wasteful number, since it uses less digits than its factorization.

2155234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6404.

The product of its digits is 1200, while the sum is 22.

The square root of 2155234 is about 1468.0715241432. The cubic root of 2155234 is about 129.1709369845.

It can be divided in two parts, 21 and 55234, that added together give a palindrome (55255).

The spelling of 2155234 in words is "two million, one hundred fifty-five thousand, two hundred thirty-four".