54768778 has 4 divisors (see below), whose sum is σ = 82153170. Its totient is φ = 27384388.

The previous prime is 54768767. The next prime is 54768793. The reversal of 54768778 is 87786745.

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

It can be written as a sum of positive squares in only one way, i.e., 27489049 + 27279729 = 5243^2 + 5223^2 .

It is a super-2 number, since 2×54768778² = 5999238087226568, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13692193 + ... + 13692196.

Almost surely, 2^54768778 is an apocalyptic number.

54768778 is a deficient number, since it is larger than the sum of its proper divisors (27384392).

54768778 is a wasteful number, since it uses less digits than its factorization.

54768778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27384391.

The product of its digits is 2634240, while the sum is 52.

The square root of 54768778 is about 7400.5930843413. The cubic root of 54768778 is about 379.7615725005.

The spelling of 54768778 in words is "fifty-four million, seven hundred sixty-eight thousand, seven hundred seventy-eight".