147275729 has 2 divisors, whose sum is σ = 147275730. Its totient is φ = 147275728.

The previous prime is 147275719. The next prime is 147275767. The reversal of 147275729 is 927572741.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147064129 + 211600 = 12127^2 + 460^2 .

It is an emirp because it is prime and its reverse (927572741) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 147275729 - 2²⁰ = 146227153 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 147275729.

It is not a weakly prime, because it can be changed into another prime (147275719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73637864 + 73637865.

It is an arithmetic number, because the mean of its divisors is an integer number (73637865).

Almost surely, 2^147275729 is an apocalyptic number.

It is an amenable number.

147275729 is a deficient number, since it is larger than the sum of its proper divisors (1).

147275729 is an equidigital number, since it uses as much as digits as its factorization.

147275729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 246960, while the sum is 44.

The square root of 147275729 is about 12135.7211981818. The cubic root of 147275729 is about 528.0929791587.

The spelling of 147275729 in words is "one hundred forty-seven million, two hundred seventy-five thousand, seven hundred twenty-nine".