197049571 has 2 divisors, whose sum is σ = 197049572. Its totient is φ = 197049570.

The previous prime is 197049563. The next prime is 197049617. The reversal of 197049571 is 175940791.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 197049571 - 2³ = 197049563 is a prime.

It is not a weakly prime, because it can be changed into another prime (197049511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98524785 + 98524786.

It is an arithmetic number, because the mean of its divisors is an integer number (98524786).

Almost surely, 2^197049571 is an apocalyptic number.

197049571 is a deficient number, since it is larger than the sum of its proper divisors (1).

197049571 is an equidigital number, since it uses as much as digits as its factorization.

197049571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 79380, while the sum is 43.

The square root of 197049571 is about 14037.4346303019. The cubic root of 197049571 is about 581.9135874272.

The spelling of 197049571 in words is "one hundred ninety-seven million, forty-nine thousand, five hundred seventy-one".