150065561 has 4 divisors (see below), whose sum is σ = 150596112. Its totient is φ = 149535012.

The previous prime is 150065557. The next prime is 150065623. The reversal of 150065561 is 165560051.

150065561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 150065561 - 2² = 150065557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (150005561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264851 + ... + 265416.

It is an arithmetic number, because the mean of its divisors is an integer number (37649028).

Almost surely, 2^150065561 is an apocalyptic number.

It is an amenable number.

150065561 is a deficient number, since it is larger than the sum of its proper divisors (530551).

150065561 is an equidigital number, since it uses as much as digits as its factorization.

150065561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530550.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 150065561 is about 12250.1249381384. The cubic root of 150065561 is about 531.4066832699.

The spelling of 150065561 in words is "one hundred fifty million, sixty-five thousand, five hundred sixty-one".