2188551 has 8 divisors (see below), whose sum is σ = 2926080. Its totient is φ = 1455032.

The previous prime is 2188541. The next prime is 2188583. The reversal of 2188551 is 1558812.

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

It is a cyclic number.

It is not a de Polignac number, because 2188551 - 2¹⁷ = 2057479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2188531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 676 + ... + 2198.

It is an arithmetic number, because the mean of its divisors is an integer number (365760).

2^2188551 is an apocalyptic number.

2188551 is a deficient number, since it is larger than the sum of its proper divisors (737529).

2188551 is a wasteful number, since it uses less digits than its factorization.

2188551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2005.

The product of its digits is 3200, while the sum is 30.

The square root of 2188551 is about 1479.3752059569. The cubic root of 2188551 is about 129.8331389750.

The spelling of 2188551 in words is "two million, one hundred eighty-eight thousand, five hundred fifty-one".