147091057 has 2 divisors, whose sum is σ = 147091058. Its totient is φ = 147091056.

The previous prime is 147091033. The next prime is 147091073. The reversal of 147091057 is 750190741.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 146676321 + 414736 = 12111^2 + 644^2 .

It is an emirp because it is prime and its reverse (750190741) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 147091057 - 2¹⁹ = 146566769 is a prime.

It is not a weakly prime, because it can be changed into another prime (147791057) 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, 73545528 + 73545529.

It is an arithmetic number, because the mean of its divisors is an integer number (73545529).

Almost surely, 2^147091057 is an apocalyptic number.

It is an amenable number.

147091057 is a deficient number, since it is larger than the sum of its proper divisors (1).

147091057 is an equidigital number, since it uses as much as digits as its factorization.

147091057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8820, while the sum is 34.

The square root of 147091057 is about 12128.1101990376. The cubic root of 147091057 is about 527.8721580314.

The spelling of 147091057 in words is "one hundred forty-seven million, ninety-one thousand, fifty-seven".