54784557 has 12 divisors (see below), whose sum is σ = 83788380. Its totient is φ = 34374528.

The previous prime is 54784549. The next prime is 54784571. The reversal of 54784557 is 75548745.

It can be written as a sum of positive squares in 2 ways, for example, as 26842761 + 27941796 = 5181^2 + 5286^2 .

It is not a de Polignac number, because 54784557 - 2³ = 54784549 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

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 polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 178882 + ... + 179187.

It is an arithmetic number, because the mean of its divisors is an integer number (6982365).

Almost surely, 2^54784557 is an apocalyptic number.

It is an amenable number.

54784557 is a deficient number, since it is larger than the sum of its proper divisors (29003823).

54784557 is a wasteful number, since it uses less digits than its factorization.

54784557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358092 (or 358089 counting only the distinct ones).

The product of its digits is 784000, while the sum is 45.

The square root of 54784557 is about 7401.6590707760. The cubic root of 54784557 is about 379.7980390343.

The spelling of 54784557 in words is "fifty-four million, seven hundred eighty-four thousand, five hundred fifty-seven".