54399997 has 2 divisors, whose sum is σ = 54399998. Its totient is φ = 54399996.

The previous prime is 54399979. The next prime is 54400039. The reversal of 54399997 is 79999345.

Together with previous prime (54399979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44876601 + 9523396 = 6699^2 + 3086^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54399997 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 (54399937) 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, 27199998 + 27199999.

It is an arithmetic number, because the mean of its divisors is an integer number (27199999).

Almost surely, 2^54399997 is an apocalyptic number.

It is an amenable number.

54399997 is a deficient number, since it is larger than the sum of its proper divisors (1).

54399997 is an equidigital number, since it uses as much as digits as its factorization.

54399997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2755620, while the sum is 55.

The square root of 54399997 is about 7375.6353624620. The cubic root of 54399997 is about 378.9072879092.

The spelling of 54399997 in words is "fifty-four million, three hundred ninety-nine thousand, nine hundred ninety-seven".