54688399 has 2 divisors, whose sum is σ = 54688400. Its totient is φ = 54688398.

The previous prime is 54688393. The next prime is 54688409. The reversal of 54688399 is 99388645.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54688399 - 2⁵ = 54688367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54688393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27344199 + 27344200.

It is an arithmetic number, because the mean of its divisors is an integer number (27344200).

Almost surely, 2^54688399 is an apocalyptic number.

54688399 is a deficient number, since it is larger than the sum of its proper divisors (1).

54688399 is an equidigital number, since it uses as much as digits as its factorization.

54688399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1866240, while the sum is 52.

The square root of 54688399 is about 7395.1605121187. The cubic root of 54688399 is about 379.5757013919.

The spelling of 54688399 in words is "fifty-four million, six hundred eighty-eight thousand, three hundred ninety-nine".