150099721 has 2 divisors, whose sum is σ = 150099722. Its totient is φ = 150099720.

The previous prime is 150099689. The next prime is 150099809. The reversal of 150099721 is 127990051.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149695225 + 404496 = 12235^2 + 636^2 .

It is a cyclic number.

It is not a de Polignac number, because 150099721 - 2⁵ = 150099689 is a prime.

It is equal to p_8449720 and since 150099721 and 8449720 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (150049721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75049860 + 75049861.

It is an arithmetic number, because the mean of its divisors is an integer number (75049861).

Almost surely, 2^150099721 is an apocalyptic number.

It is an amenable number.

150099721 is a deficient number, since it is larger than the sum of its proper divisors (1).

150099721 is an equidigital number, since it uses as much as digits as its factorization.

150099721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5670, while the sum is 34.

The square root of 150099721 is about 12251.5191302956. The cubic root of 150099721 is about 531.4470022589.

The spelling of 150099721 in words is "one hundred fifty million, ninety-nine thousand, seven hundred twenty-one".