53997197 has 2 divisors, whose sum is σ = 53997198. Its totient is φ = 53997196.

The previous prime is 53997193. The next prime is 53997233. The reversal of 53997197 is 79179935.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33512521 + 20484676 = 5789^2 + 4526^2 .

It is a cyclic number.

It is not a de Polignac number, because 53997197 - 2² = 53997193 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53997193) 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, 26998598 + 26998599.

It is an arithmetic number, because the mean of its divisors is an integer number (26998599).

Almost surely, 2^53997197 is an apocalyptic number.

It is an amenable number.

53997197 is a deficient number, since it is larger than the sum of its proper divisors (1).

53997197 is an equidigital number, since it uses as much as digits as its factorization.

53997197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 535815, while the sum is 50.

The square root of 53997197 is about 7348.2785058815. The cubic root of 53997197 is about 377.9697749318.

The spelling of 53997197 in words is "fifty-three million, nine hundred ninety-seven thousand, one hundred ninety-seven".