150555989 has 2 divisors, whose sum is σ = 150555990. Its totient is φ = 150555988.

The previous prime is 150555971. The next prime is 150556061. The reversal of 150555989 is 989555051.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147816964 + 2739025 = 12158^2 + 1655^2 .

It is an emirp because it is prime and its reverse (989555051) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 150555989 - 2¹⁶ = 150490453 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (150555919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75277994 + 75277995.

It is an arithmetic number, because the mean of its divisors is an integer number (75277995).

Almost surely, 2^150555989 is an apocalyptic number.

It is an amenable number.

150555989 is a deficient number, since it is larger than the sum of its proper divisors (1).

150555989 is an equidigital number, since it uses as much as digits as its factorization.

150555989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 405000, while the sum is 47.

The square root of 150555989 is about 12270.1258754750. The cubic root of 150555989 is about 531.9849490249.

The spelling of 150555989 in words is "one hundred fifty million, five hundred fifty-five thousand, nine hundred eighty-nine".