150165661 has 2 divisors, whose sum is σ = 150165662. Its totient is φ = 150165660.

The previous prime is 150165601. The next prime is 150165667. The reversal of 150165661 is 166561051.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95922436 + 54243225 = 9794^2 + 7365^2 .

It is a cyclic number.

It is not a de Polignac number, because 150165661 - 2¹¹ = 150163613 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (150165667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75082830 + 75082831.

It is an arithmetic number, because the mean of its divisors is an integer number (75082831).

Almost surely, 2^150165661 is an apocalyptic number.

It is an amenable number.

150165661 is a deficient number, since it is larger than the sum of its proper divisors (1).

150165661 is an equidigital number, since it uses as much as digits as its factorization.

150165661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 150165661 is about 12254.2099296527. The cubic root of 150165661 is about 531.5248138291.

The spelling of 150165661 in words is "one hundred fifty million, one hundred sixty-five thousand, six hundred sixty-one".