147418561 has 4 divisors (see below), whose sum is σ = 147466372. Its totient is φ = 147370752.

The previous prime is 147418529. The next prime is 147418573. The reversal of 147418561 is 165814741.

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 119793025 + 27625536 = 10945^2 + 5256^2 .

It is a cyclic number.

It is not a de Polignac number, because 147418561 - 2⁵ = 147418529 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 147418561.

It is not an unprimeable number, because it can be changed into a prime (147418591) 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, 18936 + ... + 25561.

It is an arithmetic number, because the mean of its divisors is an integer number (36866593).

Almost surely, 2^147418561 is an apocalyptic number.

It is an amenable number.

147418561 is a deficient number, since it is larger than the sum of its proper divisors (47811).

147418561 is an equidigital number, since it uses as much as digits as its factorization.

147418561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47810.

The product of its digits is 26880, while the sum is 37.

The square root of 147418561 is about 12141.6045479994. The cubic root of 147418561 is about 528.2636436346.

The spelling of 147418561 in words is "one hundred forty-seven million, four hundred eighteen thousand, five hundred sixty-one".