15155489 has 2 divisors, whose sum is σ = 15155490. Its totient is φ = 15155488.

The previous prime is 15155471. The next prime is 15155513. The reversal of 15155489 is 98455151.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11022400 + 4133089 = 3320^2 + 2033^2 .

It is a cyclic number.

It is not a de Polignac number, because 15155489 - 2¹² = 15151393 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (15355489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7577744 + 7577745.

It is an arithmetic number, because the mean of its divisors is an integer number (7577745).

Almost surely, 2^15155489 is an apocalyptic number.

It is an amenable number.

15155489 is a deficient number, since it is larger than the sum of its proper divisors (1).

15155489 is an equidigital number, since it uses as much as digits as its factorization.

15155489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36000, while the sum is 38.

The square root of 15155489 is about 3893.0051374228. The cubic root of 15155489 is about 247.4704328180.

The spelling of 15155489 in words is "fifteen million, one hundred fifty-five thousand, four hundred eighty-nine".