147145645 has 4 divisors (see below), whose sum is σ = 176574780. Its totient is φ = 117716512.

The previous prime is 147145639. The next prime is 147145657. The reversal of 147145645 is 546541741.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 546541741 = 71 ⋅7697771.

It can be written as a sum of positive squares in 2 ways, for example, as 43533604 + 103612041 = 6598^2 + 10179^2 .

It is a cyclic number.

It is not a de Polignac number, because 147145645 - 2⁷ = 147145517 is a prime.

It is a super-3 number, since 3×147145645³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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, 14714560 + ... + 14714569.

It is an arithmetic number, because the mean of its divisors is an integer number (44143695).

Almost surely, 2^147145645 is an apocalyptic number.

It is an amenable number.

147145645 is a deficient number, since it is larger than the sum of its proper divisors (29429135).

147145645 is an equidigital number, since it uses as much as digits as its factorization.

147145645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29429134.

The product of its digits is 67200, while the sum is 37.

The square root of 147145645 is about 12130.3604645534. The cubic root of 147145645 is about 527.9374507420.

The spelling of 147145645 in words is "one hundred forty-seven million, one hundred forty-five thousand, six hundred forty-five".