2154487 has 2 divisors, whose sum is σ = 2154488. Its totient is φ = 2154486.

The previous prime is 2154419. The next prime is 2154491. The reversal of 2154487 is 7844512.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2154487 - 2¹⁹ = 1630199 is a prime.

It is a Chen prime.

2154487 is a lucky number.

It is equal to p₁₅₉₅₅₆ and since 2154487 and 159556 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2154587) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077243 + 1077244.

It is an arithmetic number, because the mean of its divisors is an integer number (1077244).

2^2154487 is an apocalyptic number.

2154487 is a deficient number, since it is larger than the sum of its proper divisors (1).

2154487 is an equidigital number, since it uses as much as digits as its factorization.

2154487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8960, while the sum is 31.

The square root of 2154487 is about 1467.8170866971. The cubic root of 2154487 is about 129.1560117931.

Adding to 2154487 its reverse (7844512), we get a palindrome (9998999).

The spelling of 2154487 in words is "two million, one hundred fifty-four thousand, four hundred eighty-seven".