54478257 has 4 divisors (see below), whose sum is σ = 72637680. Its totient is φ = 36318836.

The previous prime is 54478247. The next prime is 54478271. The reversal of 54478257 is 75287445.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 54478257 - 2⁴ = 54478241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54478247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9079707 + ... + 9079712.

It is an arithmetic number, because the mean of its divisors is an integer number (18159420).

Almost surely, 2^54478257 is an apocalyptic number.

It is an amenable number.

54478257 is a deficient number, since it is larger than the sum of its proper divisors (18159423).

54478257 is a wasteful number, since it uses less digits than its factorization.

54478257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18159422.

The product of its digits is 313600, while the sum is 42.

The square root of 54478257 is about 7380.9387614314. The cubic root of 54478257 is about 379.0888999041.

The spelling of 54478257 in words is "fifty-four million, four hundred seventy-eight thousand, two hundred fifty-seven".