97150181 has 2 divisors, whose sum is σ = 97150182. Its totient is φ = 97150180.

The previous prime is 97150147. The next prime is 97150199. The reversal of 97150181 is 18105179.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66569281 + 30580900 = 8159^2 + 5530^2 .

It is an emirp because it is prime and its reverse (18105179) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97150181 - 2⁶ = 97150117 is a prime.

It is a super-2 number, since 2×97150181² = 18876315336665522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97150481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48575090 + 48575091.

It is an arithmetic number, because the mean of its divisors is an integer number (48575091).

Almost surely, 2^97150181 is an apocalyptic number.

It is an amenable number.

97150181 is a deficient number, since it is larger than the sum of its proper divisors (1).

97150181 is an equidigital number, since it uses as much as digits as its factorization.

97150181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 32.

The square root of 97150181 is about 9856.4791381101. The cubic root of 97150181 is about 459.7070929879.

The spelling of 97150181 in words is "ninety-seven million, one hundred fifty thousand, one hundred eighty-one".