54278775 has 48 divisors (see below), whose sum is σ = 100861600. Its totient is φ = 28615680.

The previous prime is 54278747. The next prime is 54278779. The reversal of 54278775 is 57787245.

It is not a de Polignac number, because 54278775 - 2⁷ = 54278647 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 54278775.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54278779) 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, 65061 + ... + 65889.

Almost surely, 2^54278775 is an apocalyptic number.

54278775 is a deficient number, since it is larger than the sum of its proper divisors (46582825).

54278775 is a wasteful number, since it uses less digits than its factorization.

54278775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945 (or 934 counting only the distinct ones).

The product of its digits is 548800, while the sum is 45.

The square root of 54278775 is about 7367.4130466535. The cubic root of 54278775 is about 378.6256331207.

The spelling of 54278775 in words is "fifty-four million, two hundred seventy-eight thousand, seven hundred seventy-five".