2171275 has 6 divisors (see below), whose sum is σ = 2692412. Its totient is φ = 1737000.

The previous prime is 2171261. The next prime is 2171293. The reversal of 2171275 is 5721712.

It is a happy number.

It is not a de Polignac number, because 2171275 - 2⁵ = 2171243 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 86851 = 2171275 / (2 + 1 + 7 + 1 + 2 + 7 + 5).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43401 + ... + 43450.

2^2171275 is an apocalyptic number.

2171275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2171275 is a deficient number, since it is larger than the sum of its proper divisors (521137).

2171275 is an equidigital number, since it uses as much as digits as its factorization.

2171275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86861 (or 86856 counting only the distinct ones).

The product of its digits is 980, while the sum is 25.

The square root of 2171275 is about 1473.5246859147. The cubic root of 2171275 is about 129.4906101727.

Adding to 2171275 its reverse (5721712), we get a palindrome (7892987).

The spelling of 2171275 in words is "two million, one hundred seventy-one thousand, two hundred seventy-five".