54726778 has 8 divisors (see below), whose sum is σ = 82334772. Its totient is φ = 27281856.

The previous prime is 54726773. The next prime is 54726787. The reversal of 54726778 is 87762745.

It can be written as a sum of positive squares in 2 ways, for example, as 54508689 + 218089 = 7383^2 + 467^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×54726778² = 5990040460522568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (54726773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39925 + ... + 41272.

Almost surely, 2^54726778 is an apocalyptic number.

54726778 is a deficient number, since it is larger than the sum of its proper divisors (27607994).

54726778 is a wasteful number, since it uses less digits than its factorization.

54726778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81536.

The product of its digits is 658560, while the sum is 46.

The square root of 54726778 is about 7397.7549297067. The cubic root of 54726778 is about 379.6644729881.

The spelling of 54726778 in words is "fifty-four million, seven hundred twenty-six thousand, seven hundred seventy-eight".