2154387 has 8 divisors (see below), whose sum is σ = 2997504. Its totient is φ = 1373768.

The previous prime is 2154331. The next prime is 2154389. The reversal of 2154387 is 7834512.

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 2154387 - 2⁷ = 2154259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2154389) 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, 15543 + ... + 15680.

It is an arithmetic number, because the mean of its divisors is an integer number (374688).

2^2154387 is an apocalyptic number.

2154387 is a deficient number, since it is larger than the sum of its proper divisors (843117).

2154387 is a wasteful number, since it uses less digits than its factorization.

2154387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31249.

The product of its digits is 6720, while the sum is 30.

The square root of 2154387 is about 1467.7830221119. The cubic root of 2154387 is about 129.1540135137.

Adding to 2154387 its reverse (7834512), we get a palindrome (9988899).

The spelling of 2154387 in words is "two million, one hundred fifty-four thousand, three hundred eighty-seven".