54777646 has 64 divisors (see below), whose sum is σ = 109509120. Its totient is φ = 19906560.

The previous prime is 54777637. The next prime is 54777647. The reversal of 54777646 is 64677745.

It is a junction number, because it is equal to n+sod(n) for n = 54777596 and 54777605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54777647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 283726 + ... + 283918.

It is an arithmetic number, because the mean of its divisors is an integer number (1711080).

Almost surely, 2^54777646 is an apocalyptic number.

54777646 is a deficient number, since it is larger than the sum of its proper divisors (54731474).

54777646 is a wasteful number, since it uses less digits than its factorization.

54777646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329.

The product of its digits is 987840, while the sum is 46.

The square root of 54777646 is about 7401.1922012606. The cubic root of 54777646 is about 379.7820680212.

Subtracting 54777646 from its reverse (64677745), we obtain a palindrome (9900099).

The spelling of 54777646 in words is "fifty-four million, seven hundred seventy-seven thousand, six hundred forty-six".