54781375 has 16 divisors (see below), whose sum is σ = 74584224. Its totient is φ = 39840000.

The previous prime is 54781333. The next prime is 54781379. The reversal of 54781375 is 57318745.

It is not a de Polignac number, because 54781375 - 2¹³ = 54773183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54781379) 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 in 15 ways as a sum of consecutive naturals, for example, 18546 + ... + 21295.

It is an arithmetic number, because the mean of its divisors is an integer number (4661514).

Almost surely, 2^54781375 is an apocalyptic number.

54781375 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

54781375 is a deficient number, since it is larger than the sum of its proper divisors (19802849).

54781375 is a wasteful number, since it uses less digits than its factorization.

54781375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39867 (or 39857 counting only the distinct ones).

The product of its digits is 117600, while the sum is 40.

The square root of 54781375 is about 7401.4441158466. Note that the first 3 decimals coincide. The cubic root of 54781375 is about 379.7906857409.

The spelling of 54781375 in words is "fifty-four million, seven hundred eighty-one thousand, three hundred seventy-five".