147735961 has 4 divisors (see below), whose sum is σ = 150157924. Its totient is φ = 145314000.

The previous prime is 147735953. The next prime is 147735971. The reversal of 147735961 is 169537741.

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 72999936 + 74736025 = 8544^2 + 8645^2 .

It is a cyclic number.

It is not a de Polignac number, because 147735961 - 2³ = 147735953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (147735911) 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, 1210890 + ... + 1211011.

It is an arithmetic number, because the mean of its divisors is an integer number (37539481).

Almost surely, 2^147735961 is an apocalyptic number.

It is an amenable number.

147735961 is a deficient number, since it is larger than the sum of its proper divisors (2421963).

147735961 is an equidigital number, since it uses as much as digits as its factorization.

147735961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2421962.

The product of its digits is 158760, while the sum is 43.

The square root of 147735961 is about 12154.6682801301. The cubic root of 147735961 is about 528.6424984371.

The spelling of 147735961 in words is "one hundred forty-seven million, seven hundred thirty-five thousand, nine hundred sixty-one".