54681345 has 16 divisors (see below), whose sum is σ = 97211520. Its totient is φ = 29163312.

The previous prime is 54681343. The next prime is 54681353. The reversal of 54681345 is 54318645.

It is a happy number.

54681345 is a `hidden beast` number, since 546 + 81 + 34 + 5 = 666.

It is not a de Polignac number, because 54681345 - 2¹ = 54681343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54681343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202389 + ... + 202658.

It is an arithmetic number, because the mean of its divisors is an integer number (6075720).

Almost surely, 2^54681345 is an apocalyptic number.

It is an amenable number.

54681345 is a deficient number, since it is larger than the sum of its proper divisors (42530175).

54681345 is a wasteful number, since it uses less digits than its factorization.

54681345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405061 (or 405055 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 54681345 is about 7394.6835632094. The cubic root of 54681345 is about 379.5593807939.

The spelling of 54681345 in words is "fifty-four million, six hundred eighty-one thousand, three hundred forty-five".