54840197 has 2 divisors, whose sum is σ = 54840198. Its totient is φ = 54840196.

The previous prime is 54840193. The next prime is 54840217. The reversal of 54840197 is 79104845.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52548001 + 2292196 = 7249^2 + 1514^2 .

It is a cyclic number.

It is not a de Polignac number, because 54840197 - 2² = 54840193 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54840197.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54840193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27420098 + 27420099.

It is an arithmetic number, because the mean of its divisors is an integer number (27420099).

Almost surely, 2^54840197 is an apocalyptic number.

It is an amenable number.

54840197 is a deficient number, since it is larger than the sum of its proper divisors (1).

54840197 is an equidigital number, since it uses as much as digits as its factorization.

54840197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 54840197 is about 7405.4167337159. The cubic root of 54840197 is about 379.9265716848.

The spelling of 54840197 in words is "fifty-four million, eight hundred forty thousand, one hundred ninety-seven".