150987997 has 2 divisors, whose sum is σ = 150987998. Its totient is φ = 150987996.

The previous prime is 150987989. The next prime is 150988027. The reversal of 150987997 is 799789051.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120362841 + 30625156 = 10971^2 + 5534^2 .

It is a cyclic number.

It is not a de Polignac number, because 150987997 - 2³ = 150987989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (150957997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75493998 + 75493999.

It is an arithmetic number, because the mean of its divisors is an integer number (75493999).

Almost surely, 2^150987997 is an apocalyptic number.

It is an amenable number.

150987997 is a deficient number, since it is larger than the sum of its proper divisors (1).

150987997 is an equidigital number, since it uses as much as digits as its factorization.

150987997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1428840, while the sum is 55.

The square root of 150987997 is about 12287.7173225949. The cubic root of 150987997 is about 532.4932921047.

The spelling of 150987997 in words is "one hundred fifty million, nine hundred eighty-seven thousand, nine hundred ninety-seven".