55777748 has 24 divisors (see below), whose sum is σ = 111304872. Its totient is φ = 24228864.

The previous prime is 55777741. The next prime is 55777789. The reversal of 55777748 is 84777755.

It is a happy number.

55777748 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 6724 + 55771024 = 82^2 + 7468^2 .

It is a super-2 number, since 2×55777748² = 6222314343903008, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55777696 and 55777705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55777741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30665 + ... + 32432.

It is an arithmetic number, because the mean of its divisors is an integer number (4637703).

Almost surely, 2^55777748 is an apocalyptic number.

It is an amenable number.

55777748 is a deficient number, since it is larger than the sum of its proper divisors (55527124).

55777748 is a wasteful number, since it uses less digits than its factorization.

55777748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63131 (or 63129 counting only the distinct ones).

The product of its digits is 1920800, while the sum is 50.

The square root of 55777748 is about 7468.4501738982. The cubic root of 55777748 is about 382.0794312314.

The spelling of 55777748 in words is "fifty-five million, seven hundred seventy-seven thousand, seven hundred forty-eight".