1552289 has 2 divisors, whose sum is σ = 1552290. Its totient is φ = 1552288.

The previous prime is 1552277. The next prime is 1552297. The reversal of 1552289 is 9822551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1459264 + 93025 = 1208^2 + 305^2 .

It is an emirp because it is prime and its reverse (9822551) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1552289 is a prime.

It is a super-2 number, since 2×1552289² = 4819202279042, which contains 22 as substring.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1552589) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 776144 + 776145.

It is an arithmetic number, because the mean of its divisors is an integer number (776145).

2^1552289 is an apocalyptic number.

It is an amenable number.

1552289 is a deficient number, since it is larger than the sum of its proper divisors (1).

1552289 is an equidigital number, since it uses as much as digits as its factorization.

1552289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7200, while the sum is 32.

The square root of 1552289 is about 1245.9089051773. The cubic root of 1552289 is about 115.7863934624.

The spelling of 1552289 in words is "one million, five hundred fifty-two thousand, two hundred eighty-nine".