54009797 has 2 divisors, whose sum is σ = 54009798. Its totient is φ = 54009796.

The previous prime is 54009779. The next prime is 54009817. The reversal of 54009797 is 79790045.

It is a happy number.

Together with previous prime (54009779) 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., 49477156 + 4532641 = 7034^2 + 2129^2 .

It is a cyclic number.

It is not a de Polignac number, because 54009797 - 2⁶ = 54009733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54009757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27004898 + 27004899.

It is an arithmetic number, because the mean of its divisors is an integer number (27004899).

Almost surely, 2^54009797 is an apocalyptic number.

It is an amenable number.

54009797 is a deficient number, since it is larger than the sum of its proper divisors (1).

54009797 is an equidigital number, since it uses as much as digits as its factorization.

54009797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 79380, while the sum is 41.

The square root of 54009797 is about 7349.1357995345. The cubic root of 54009797 is about 377.9991718205. Note that the first 3 decimals are identical.

The spelling of 54009797 in words is "fifty-four million, nine thousand, seven hundred ninety-seven".