147321745 has 8 divisors (see below), whose sum is σ = 187185384. Its totient is φ = 110924544.

The previous prime is 147321737. The next prime is 147321781. The reversal of 147321745 is 547123741.

It can be written as a sum of positive squares in 4 ways, for example, as 60980481 + 86341264 = 7809^2 + 9292^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 147321745 - 2³ = 147321737 is a prime.

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 147321745.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 866514 + ... + 866683.

It is an arithmetic number, because the mean of its divisors is an integer number (23398173).

Almost surely, 2^147321745 is an apocalyptic number.

It is an amenable number.

147321745 is a deficient number, since it is larger than the sum of its proper divisors (39863639).

147321745 is a wasteful number, since it uses less digits than its factorization.

147321745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1733219.

The product of its digits is 23520, while the sum is 34.

The square root of 147321745 is about 12137.6169407343. The cubic root of 147321745 is about 528.1479739548.

The spelling of 147321745 in words is "one hundred forty-seven million, three hundred twenty-one thousand, seven hundred forty-five".