54478545 has 32 divisors (see below), whose sum is σ = 97421184. Its totient is φ = 25766400.

The previous prime is 54478537. The next prime is 54478547. The reversal of 54478545 is 54587445.

It is a happy number.

It is not a de Polignac number, because 54478545 - 2³ = 54478537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 54478497 and 54478506.

It is not an unprimeable number, because it can be changed into a prime (54478547) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2739 + ... + 10791.

It is an arithmetic number, because the mean of its divisors is an integer number (3044412).

Almost surely, 2^54478545 is an apocalyptic number.

54478545 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

54478545 is a deficient number, since it is larger than the sum of its proper divisors (42942639).

54478545 is a wasteful number, since it uses less digits than its factorization.

54478545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8113.

The product of its digits is 448000, while the sum is 42.

The square root of 54478545 is about 7380.9582711190. The cubic root of 54478545 is about 379.0895679223.

Subtracting 54478545 from its reverse (54587445), we obtain a square (108900 = 330²).

The spelling of 54478545 in words is "fifty-four million, four hundred seventy-eight thousand, five hundred forty-five".