147529561 has 2 divisors, whose sum is σ = 147529562. Its totient is φ = 147529560.

The previous prime is 147529541. The next prime is 147529573. The reversal of 147529561 is 165925741.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140873161 + 6656400 = 11869^2 + 2580^2 .

It is an emirp because it is prime and its reverse (165925741) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 147529561 - 2¹³ = 147521369 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (147529541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73764780 + 73764781.

It is an arithmetic number, because the mean of its divisors is an integer number (73764781).

Almost surely, 2^147529561 is an apocalyptic number.

It is an amenable number.

147529561 is a deficient number, since it is larger than the sum of its proper divisors (1).

147529561 is an equidigital number, since it uses as much as digits as its factorization.

147529561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75600, while the sum is 40.

The square root of 147529561 is about 12146.1747476315. The cubic root of 147529561 is about 528.3961971680.

The spelling of 147529561 in words is "one hundred forty-seven million, five hundred twenty-nine thousand, five hundred sixty-one".