197024981 has 2 divisors, whose sum is σ = 197024982. Its totient is φ = 197024980.

The previous prime is 197024921. The next prime is 197025001. The reversal of 197024981 is 189420791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 195748081 + 1276900 = 13991^2 + 1130^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197024981 is a prime.

It is a super-2 number, since 2×197024981² = 77637686276100722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197024911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98512490 + 98512491.

It is an arithmetic number, because the mean of its divisors is an integer number (98512491).

Almost surely, 2^197024981 is an apocalyptic number.

It is an amenable number.

197024981 is a deficient number, since it is larger than the sum of its proper divisors (1).

197024981 is an equidigital number, since it uses as much as digits as its factorization.

197024981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 197024981 is about 14036.5587306861. The cubic root of 197024981 is about 581.8893805735.

The spelling of 197024981 in words is "one hundred ninety-seven million, twenty-four thousand, nine hundred eighty-one".