147564971 has 2 divisors, whose sum is σ = 147564972. Its totient is φ = 147564970.

The previous prime is 147564961. The next prime is 147564979. The reversal of 147564971 is 179465741.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 147564971 - 2¹⁰ = 147563947 is a prime.

It is not a weakly prime, because it can be changed into another prime (147564979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73782485 + 73782486.

It is an arithmetic number, because the mean of its divisors is an integer number (73782486).

Almost surely, 2^147564971 is an apocalyptic number.

147564971 is a deficient number, since it is larger than the sum of its proper divisors (1).

147564971 is an equidigital number, since it uses as much as digits as its factorization.

147564971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 211680, while the sum is 44.

The square root of 147564971 is about 12147.6323207446. The cubic root of 147564971 is about 528.4384689506.

The spelling of 147564971 in words is "one hundred forty-seven million, five hundred sixty-four thousand, nine hundred seventy-one".