2171602 has 4 divisors (see below), whose sum is σ = 3257406. Its totient is φ = 1085800.

The previous prime is 2171599. The next prime is 2171621. The reversal of 2171602 is 2061712.

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

It can be written as a sum of positive squares in only one way, i.e., 1798281 + 373321 = 1341^2 + 611^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2171602.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 542899 + ... + 542902.

2^2171602 is an apocalyptic number.

2171602 is a deficient number, since it is larger than the sum of its proper divisors (1085804).

2171602 is a wasteful number, since it uses less digits than its factorization.

2171602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085803.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 2171602 is about 1473.6356401770. The cubic root of 2171602 is about 129.4971103940.

The spelling of 2171602 in words is "two million, one hundred seventy-one thousand, six hundred two".