54784509 has 32 divisors (see below), whose sum is σ = 82857600. Its totient is φ = 31960320.

The previous prime is 54784507. The next prime is 54784511. The reversal of 54784509 is 90548745.

It is an interprime number because it is at equal distance from previous prime (54784507) and next prime (54784511).

It is not a de Polignac number, because 54784509 - 2¹ = 54784507 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54784507) 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 31 ways as a sum of consecutive naturals, for example, 66319 + ... + 67139.

It is an arithmetic number, because the mean of its divisors is an integer number (2589300).

Almost surely, 2^54784509 is an apocalyptic number.

54784509 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

It is an amenable number.

54784509 is a deficient number, since it is larger than the sum of its proper divisors (28073091).

54784509 is a wasteful number, since it uses less digits than its factorization.

54784509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925.

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 54784509 is about 7401.6558282590. The cubic root of 54784509 is about 379.7979281131.

The spelling of 54784509 in words is "fifty-four million, seven hundred eighty-four thousand, five hundred nine".