54781265 has 24 divisors (see below), whose sum is σ = 83426112. Its totient is φ = 34147680.

The previous prime is 54781249. The next prime is 54781267. The reversal of 54781265 is 56218745.

54781265 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 54781265 - 2⁴ = 54781249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54781267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7469 + ... + 12858.

It is an arithmetic number, because the mean of its divisors is an integer number (3476088).

Almost surely, 2^54781265 is an apocalyptic number.

54781265 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

54781265 is a deficient number, since it is larger than the sum of its proper divisors (28644847).

54781265 is a wasteful number, since it uses less digits than its factorization.

54781265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20357 (or 20350 counting only the distinct ones).

The product of its digits is 67200, while the sum is 38.

The square root of 54781265 is about 7401.4366848606. The cubic root of 54781265 is about 379.7904315365.

The spelling of 54781265 in words is "fifty-four million, seven hundred eighty-one thousand, two hundred sixty-five".