97042181 has 2 divisors, whose sum is σ = 97042182. Its totient is φ = 97042180.

The previous prime is 97042163. The next prime is 97042219. The reversal of 97042181 is 18124079.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79744900 + 17297281 = 8930^2 + 4159^2 .

It is a cyclic number.

It is not a de Polignac number, because 97042181 - 2⁶ = 97042117 is a prime.

It is a super-2 number, since 2×97042181² = 18834369786473522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97042111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48521090 + 48521091.

It is an arithmetic number, because the mean of its divisors is an integer number (48521091).

Almost surely, 2^97042181 is an apocalyptic number.

It is an amenable number.

97042181 is a deficient number, since it is larger than the sum of its proper divisors (1).

97042181 is an equidigital number, since it uses as much as digits as its factorization.

97042181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 97042181 is about 9850.9989848746. The cubic root of 97042181 is about 459.5366806269.

The spelling of 97042181 in words is "ninety-seven million, forty-two thousand, one hundred eighty-one".