1554983 has 4 divisors (see below), whose sum is σ = 1557528. Its totient is φ = 1552440.

The previous prime is 1554977. The next prime is 1554989. The reversal of 1554983 is 3894551.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3894551 = 89 ⋅43759.

It is an interprime number because it is at equal distance from previous prime (1554977) and next prime (1554989).

It is a cyclic number.

It is not a de Polignac number, because 1554983 - 2¹⁴ = 1538599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1554989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260 + ... + 1782.

It is an arithmetic number, because the mean of its divisors is an integer number (389382).

2^1554983 is an apocalyptic number.

1554983 is a deficient number, since it is larger than the sum of its proper divisors (2545).

1554983 is a wasteful number, since it uses less digits than its factorization.

1554983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2544.

The product of its digits is 21600, while the sum is 35.

The square root of 1554983 is about 1246.9895749364. The cubic root of 1554983 is about 115.8533372396.

The spelling of 1554983 in words is "one million, five hundred fifty-four thousand, nine hundred eighty-three".