1553889 has 8 divisors (see below), whose sum is σ = 2128000. Its totient is φ = 1007856.

The previous prime is 1553887. The next prime is 1553897. The reversal of 1553889 is 9883551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1553889 - 2¹ = 1553887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1553887) 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 7 ways as a sum of consecutive naturals, for example, 6889 + ... + 7110.

It is an arithmetic number, because the mean of its divisors is an integer number (266000).

2^1553889 is an apocalyptic number.

It is an amenable number.

1553889 is a deficient number, since it is larger than the sum of its proper divisors (574111).

1553889 is a wasteful number, since it uses less digits than its factorization.

1553889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14039.

The product of its digits is 43200, while the sum is 39.

The square root of 1553889 is about 1246.5508413218. The cubic root of 1553889 is about 115.8261615329.

It can be divided in two parts, 1553 and 889, that added together give a palindrome (2442).

The spelling of 1553889 in words is "one million, five hundred fifty-three thousand, eight hundred eighty-nine".