2188451 has 2 divisors, whose sum is σ = 2188452. Its totient is φ = 2188450.

The previous prime is 2188447. The next prime is 2188463. The reversal of 2188451 is 1548812.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2188451 - 2² = 2188447 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2188411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1094225 + 1094226.

It is an arithmetic number, because the mean of its divisors is an integer number (1094226).

2^2188451 is an apocalyptic number.

2188451 is a deficient number, since it is larger than the sum of its proper divisors (1).

2188451 is an equidigital number, since it uses as much as digits as its factorization.

2188451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2560, while the sum is 29.

The square root of 2188451 is about 1479.3414075189. The cubic root of 2188451 is about 129.8311614852.

The spelling of 2188451 in words is "two million, one hundred eighty-eight thousand, four hundred fifty-one".