1559998 has 16 divisors (see below), whose sum is σ = 2664576. Its totient is φ = 678040.

The previous prime is 1559989. The next prime is 1560007. The reversal of 1559998 is 8999551.

1559998 is nontrivially palindromic in base 5.

It is an interprime number because it is at equal distance from previous prime (1559989) and next prime (1560007).

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1036 + ... + 2047.

It is an arithmetic number, because the mean of its divisors is an integer number (166536).

2^1559998 is an apocalyptic number.

1559998 is a deficient number, since it is larger than the sum of its proper divisors (1104578).

1559998 is a wasteful number, since it uses less digits than its factorization.

1559998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3119.

The product of its digits is 145800, while the sum is 46.

The square root of 1559998 is about 1248.9987990387. The cubic root of 1559998 is about 115.9777503898.

It can be divided in two parts, 155 and 9998, that added together give a triangular number (10153 = T₁₄₂).

The spelling of 1559998 in words is "one million, five hundred fifty-nine thousand, nine hundred ninety-eight".