150605561 has 2 divisors, whose sum is σ = 150605562. Its totient is φ = 150605560.

The previous prime is 150605537. The next prime is 150605569. The reversal of 150605561 is 165506051.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136165561 + 14440000 = 11669^2 + 3800^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-150605561 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (150605569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75302780 + 75302781.

It is an arithmetic number, because the mean of its divisors is an integer number (75302781).

Almost surely, 2^150605561 is an apocalyptic number.

It is an amenable number.

150605561 is a deficient number, since it is larger than the sum of its proper divisors (1).

150605561 is an equidigital number, since it uses as much as digits as its factorization.

150605561 is an evil number, because the sum of its binary digits is even.

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

The square root of 150605561 is about 12272.1457374006. The cubic root of 150605561 is about 532.0433296628.

The spelling of 150605561 in words is "one hundred fifty million, six hundred five thousand, five hundred sixty-one".