1554043 has 2 divisors, whose sum is σ = 1554044. Its totient is φ = 1554042.

The previous prime is 1554019. The next prime is 1554073. The reversal of 1554043 is 3404551.

It is a weak prime.

It is an emirp because it is prime and its reverse (3404551) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1554043 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1554073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 777021 + 777022.

It is an arithmetic number, because the mean of its divisors is an integer number (777022).

2^1554043 is an apocalyptic number.

1554043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1554043 is an equidigital number, since it uses as much as digits as its factorization.

1554043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 1554043 is about 1246.6126102362. The cubic root of 1554043 is about 115.8299877692.

Adding to 1554043 its reverse (3404551), we get a palindrome (4958594).

The spelling of 1554043 in words is "one million, five hundred fifty-four thousand, forty-three".