197524081 has 2 divisors, whose sum is σ = 197524082. Its totient is φ = 197524080.

The previous prime is 197524043. The next prime is 197524091. The reversal of 197524081 is 180425791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128051856 + 69472225 = 11316^2 + 8335^2 .

It is a cyclic number.

It is not a de Polignac number, because 197524081 - 2¹³ = 197515889 is a prime.

It is a super-2 number, since 2×197524081² = 78031525149789122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 197524081.

It is not a weakly prime, because it can be changed into another prime (197524091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98762040 + 98762041.

It is an arithmetic number, because the mean of its divisors is an integer number (98762041).

Almost surely, 2^197524081 is an apocalyptic number.

It is an amenable number.

197524081 is a deficient number, since it is larger than the sum of its proper divisors (1).

197524081 is an equidigital number, since it uses as much as digits as its factorization.

197524081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 197524081 is about 14054.3260599717. The cubic root of 197524081 is about 582.3803100371.

The spelling of 197524081 in words is "one hundred ninety-seven million, five hundred twenty-four thousand, eighty-one".