1552989 has 8 divisors (see below), whose sum is σ = 2076480. Its totient is φ = 1032416.

The previous prime is 1552987. The next prime is 1552997. The reversal of 1552989 is 9892551.

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 1552989 - 2¹ = 1552987 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1552981) 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, 1432 + ... + 2270.

It is an arithmetic number, because the mean of its divisors is an integer number (259560).

2^1552989 is an apocalyptic number.

It is an amenable number.

1552989 is a deficient number, since it is larger than the sum of its proper divisors (523491).

1552989 is an equidigital number, since it uses as much as digits as its factorization.

1552989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1459.

The product of its digits is 32400, while the sum is 39.

The square root of 1552989 is about 1246.1897929288. The cubic root of 1552989 is about 115.8037953541.

The spelling of 1552989 in words is "one million, five hundred fifty-two thousand, nine hundred eighty-nine".