147165561 has 12 divisors (see below), whose sum is σ = 212680000. Its totient is φ = 98060760.

The previous prime is 147165559. The next prime is 147165563. The reversal of 147165561 is 165561741.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (147165559) and next prime (147165563).

It is not a de Polignac number, because 147165561 - 2¹ = 147165559 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (147165563) 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 11 ways as a sum of consecutive naturals, for example, 26940 + ... + 31938.

Almost surely, 2^147165561 is an apocalyptic number.

It is an amenable number.

147165561 is a deficient number, since it is larger than the sum of its proper divisors (65514439).

147165561 is a wasteful number, since it uses less digits than its factorization.

147165561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8276 (or 8273 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The square root of 147165561 is about 12131.1813522014. The cubic root of 147165561 is about 527.9612682505.

The spelling of 147165561 in words is "one hundred forty-seven million, one hundred sixty-five thousand, five hundred sixty-one".