97136437 has 2 divisors, whose sum is σ = 97136438. Its totient is φ = 97136436.

The previous prime is 97136407. The next prime is 97136443. The reversal of 97136437 is 73463179.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96943716 + 192721 = 9846^2 + 439^2 .

It is an emirp because it is prime and its reverse (73463179) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97136437 - 2⁷ = 97136309 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 97136437.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97136407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48568218 + 48568219.

It is an arithmetic number, because the mean of its divisors is an integer number (48568219).

Almost surely, 2^97136437 is an apocalyptic number.

It is an amenable number.

97136437 is a deficient number, since it is larger than the sum of its proper divisors (1).

97136437 is an equidigital number, since it uses as much as digits as its factorization.

97136437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 95256, while the sum is 40.

The square root of 97136437 is about 9855.7819070838. The cubic root of 97136437 is about 459.6854134528.

The spelling of 97136437 in words is "ninety-seven million, one hundred thirty-six thousand, four hundred thirty-seven".