54478531 has 4 divisors (see below), whose sum is σ = 54494064. Its totient is φ = 54463000.

The previous prime is 54478519. The next prime is 54478537. The reversal of 54478531 is 13587445.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 54478531 - 2²¹ = 52381379 is a prime.

It is a super-2 number, since 2×54478531² = 5935820679835922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54478537) 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, 261 + ... + 10441.

It is an arithmetic number, because the mean of its divisors is an integer number (13623516).

Almost surely, 2^54478531 is an apocalyptic number.

54478531 is a deficient number, since it is larger than the sum of its proper divisors (15533).

54478531 is a wasteful number, since it uses less digits than its factorization.

54478531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15532.

The product of its digits is 67200, while the sum is 37.

The square root of 54478531 is about 7380.9573227326. The cubic root of 54478531 is about 379.0895354493.

The spelling of 54478531 in words is "fifty-four million, four hundred seventy-eight thousand, five hundred thirty-one".