2188275 has 24 divisors (see below), whose sum is σ = 3660480. Its totient is φ = 1153440.

The previous prime is 2188271. The next prime is 2188279. The reversal of 2188275 is 5728812.

It is an interprime number because it is at equal distance from previous prime (2188271) and next prime (2188279).

It is not a de Polignac number, because 2188275 - 2² = 2188271 is a prime.

2188275 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2188271) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12136 + ... + 12314.

It is an arithmetic number, because the mean of its divisors is an integer number (152520).

2^2188275 is an apocalyptic number.

2188275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2188275 is a deficient number, since it is larger than the sum of its proper divisors (1472205).

2188275 is a wasteful number, since it uses less digits than its factorization.

2188275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355 (or 350 counting only the distinct ones).

The product of its digits is 8960, while the sum is 33.

The square root of 2188275 is about 1479.2819203925. The cubic root of 2188275 is about 129.8276809569.

It can be divided in two parts, 21 and 88275, that multiplied together give a triangular number (1853775 = T₁₉₂₅).

The spelling of 2188275 in words is "two million, one hundred eighty-eight thousand, two hundred seventy-five".