150166721 has 2 divisors, whose sum is σ = 150166722. Its totient is φ = 150166720.

The previous prime is 150166711. The next prime is 150166733. The reversal of 150166721 is 127661051.

150166721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99600400 + 50566321 = 9980^2 + 7111^2 .

It is a cyclic number.

It is not a de Polignac number, because 150166721 - 2⁶ = 150166657 is a prime.

It is not a weakly prime, because it can be changed into another prime (150166711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75083360 + 75083361.

It is an arithmetic number, because the mean of its divisors is an integer number (75083361).

Almost surely, 2^150166721 is an apocalyptic number.

It is an amenable number.

150166721 is a deficient number, since it is larger than the sum of its proper divisors (1).

150166721 is an equidigital number, since it uses as much as digits as its factorization.

150166721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 150166721 is about 12254.2531800188. The cubic root of 150166721 is about 531.5260644811.

The spelling of 150166721 in words is "one hundred fifty million, one hundred sixty-six thousand, seven hundred twenty-one".