2171254 has 4 divisors (see below), whose sum is σ = 3256884. Its totient is φ = 1085626.

The previous prime is 2171249. The next prime is 2171261. The reversal of 2171254 is 4521712.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 542812 + ... + 542815.

It is an arithmetic number, because the mean of its divisors is an integer number (814221).

2^2171254 is an apocalyptic number.

2171254 is a deficient number, since it is larger than the sum of its proper divisors (1085630).

2171254 is a wasteful number, since it uses less digits than its factorization.

2171254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085629.

The product of its digits is 560, while the sum is 22.

The square root of 2171254 is about 1473.5175601261. The cubic root of 2171254 is about 129.4901927050.

Adding to 2171254 its reverse (4521712), we get a palindrome (6692966).

The spelling of 2171254 in words is "two million, one hundred seventy-one thousand, two hundred fifty-four".