147731533 has 2 divisors, whose sum is σ = 147731534. Its totient is φ = 147731532.

The previous prime is 147731509. The next prime is 147731537. The reversal of 147731533 is 335137741.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129095044 + 18636489 = 11362^2 + 4317^2 .

It is a cyclic number.

It is not a de Polignac number, because 147731533 - 2⁹ = 147731021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (147731537) by changing a digit.

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 as a sum of consecutive naturals, namely, 73865766 + 73865767.

It is an arithmetic number, because the mean of its divisors is an integer number (73865767).

Almost surely, 2^147731533 is an apocalyptic number.

It is an amenable number.

147731533 is a deficient number, since it is larger than the sum of its proper divisors (1).

147731533 is an equidigital number, since it uses as much as digits as its factorization.

147731533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26460, while the sum is 34.

The square root of 147731533 is about 12154.4861265296. The cubic root of 147731533 is about 528.6372168244.

The spelling of 147731533 in words is "one hundred forty-seven million, seven hundred thirty-one thousand, five hundred thirty-three".