54478149 has 48 divisors (see below), whose sum is σ = 88879680. Its totient is φ = 29329920.

The previous prime is 54478147. The next prime is 54478199. The reversal of 54478149 is 94187445.

It is not a de Polignac number, because 54478149 - 2¹ = 54478147 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54478149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54478141) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 202387 + ... + 202655.

It is an arithmetic number, because the mean of its divisors is an integer number (1851660).

Almost surely, 2^54478149 is an apocalyptic number.

It is an amenable number.

54478149 is a deficient number, since it is larger than the sum of its proper divisors (34401531).

54478149 is a wasteful number, since it uses less digits than its factorization.

54478149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338 (or 319 counting only the distinct ones).

The product of its digits is 161280, while the sum is 42.

The square root of 54478149 is about 7380.9314452852. The cubic root of 54478149 is about 379.0886493966.

The spelling of 54478149 in words is "fifty-four million, four hundred seventy-eight thousand, one hundred forty-nine".