147145517 has 2 divisors, whose sum is σ = 147145518. Its totient is φ = 147145516.

The previous prime is 147145511. The next prime is 147145541. The reversal of 147145517 is 715541741.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110796676 + 36348841 = 10526^2 + 6029^2 .

It is a cyclic number.

It is not a de Polignac number, because 147145517 - 2¹⁶ = 147079981 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (147145511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73572758 + 73572759.

It is an arithmetic number, because the mean of its divisors is an integer number (73572759).

Almost surely, 2^147145517 is an apocalyptic number.

It is an amenable number.

147145517 is a deficient number, since it is larger than the sum of its proper divisors (1).

147145517 is an equidigital number, since it uses as much as digits as its factorization.

147145517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19600, while the sum is 35.

The square root of 147145517 is about 12130.3551885343. The cubic root of 147145517 is about 527.9372976601.

The spelling of 147145517 in words is "one hundred forty-seven million, one hundred forty-five thousand, five hundred seventeen".