1552525189 has 4 divisors (see below), whose sum is σ = 1555170624. Its totient is φ = 1549879756.

The previous prime is 1552525171. The next prime is 1552525201. The reversal of 1552525189 is 9815252551.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9815252551 = 13 ⋅755019427.

It is a cyclic number.

It is not a de Polignac number, because 1552525189 - 2¹⁵ = 1552492421 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 (1552525159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1321837 + ... + 1323010.

It is an arithmetic number, because the mean of its divisors is an integer number (388792656).

Almost surely, 2^1552525189 is an apocalyptic number.

It is an amenable number.

1552525189 is a deficient number, since it is larger than the sum of its proper divisors (2645435).

1552525189 is an equidigital number, since it uses as much as digits as its factorization.

1552525189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2645434.

The product of its digits is 180000, while the sum is 43.

The square root of 1552525189 is about 39402.0962513418. The cubic root of 1552525189 is about 1157.9226566905.

The spelling of 1552525189 in words is "one billion, five hundred fifty-two million, five hundred twenty-five thousand, one hundred eighty-nine".