55777922 has 6 divisors (see below), whose sum is σ = 83682729. Its totient is φ = 27883680.

The previous prime is 55777903. The next prime is 55777937. The reversal of 55777922 is 22977755.

It can be written as a sum of positive squares in 2 ways, for example, as 46771921 + 9006001 = 6839^2 + 3001^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=5281.

It is a super-2 number, since 2×55777922² = 6222353165276168, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 2 ways as a sum of consecutive naturals, for example, 7922 + ... + 13202.

Almost surely, 2^55777922 is an apocalyptic number.

55777922 is a deficient number, since it is larger than the sum of its proper divisors (27904807).

55777922 is an frugal number, since it uses more digits than its factorization.

55777922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10564 (or 5283 counting only the distinct ones).

The product of its digits is 308700, while the sum is 44.

The square root of 55777922 is about 7468.4618228923. The cubic root of 55777922 is about 382.0798285329.

The spelling of 55777922 in words is "fifty-five million, seven hundred seventy-seven thousand, nine hundred twenty-two".