150576721 has 2 divisors, whose sum is σ = 150576722. Its totient is φ = 150576720.

The previous prime is 150576709. The next prime is 150576737. The reversal of 150576721 is 127675051.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147282496 + 3294225 = 12136^2 + 1815^2 .

It is a cyclic number.

It is not a de Polignac number, because 150576721 - 2⁷ = 150576593 is a prime.

It is a super-2 number, since 2×150576721² = 45346697814223682, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (150576761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75288360 + 75288361.

It is an arithmetic number, because the mean of its divisors is an integer number (75288361).

Almost surely, 2^150576721 is an apocalyptic number.

It is an amenable number.

150576721 is a deficient number, since it is larger than the sum of its proper divisors (1).

150576721 is an equidigital number, since it uses as much as digits as its factorization.

150576721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14700, while the sum is 34.

The square root of 150576721 is about 12270.9706625026. The cubic root of 150576721 is about 532.0093665319.

The spelling of 150576721 in words is "one hundred fifty million, five hundred seventy-six thousand, seven hundred twenty-one".