150561217 has 4 divisors (see below), whose sum is σ = 150888276. Its totient is φ = 150234160.

The previous prime is 150561193. The next prime is 150561221. The reversal of 150561217 is 712165051.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 99281296 + 51279921 = 9964^2 + 7161^2 .

It is a cyclic number.

It is not a de Polignac number, because 150561217 - 2¹¹ = 150559169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (150561277) 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 in 3 ways as a sum of consecutive naturals, for example, 162838 + ... + 163759.

It is an arithmetic number, because the mean of its divisors is an integer number (37722069).

Almost surely, 2^150561217 is an apocalyptic number.

It is an amenable number.

150561217 is a deficient number, since it is larger than the sum of its proper divisors (327059).

150561217 is an equidigital number, since it uses as much as digits as its factorization.

150561217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327058.

The product of its (nonzero) digits is 2100, while the sum is 28.

The square root of 150561217 is about 12270.3389113749. The cubic root of 150561217 is about 531.9911066126.

The spelling of 150561217 in words is "one hundred fifty million, five hundred sixty-one thousand, two hundred seventeen".