55777755 has 32 divisors (see below), whose sum is σ = 98350848. Its totient is φ = 26768000.

The previous prime is 55777741. The next prime is 55777789.

55777755 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 55777755 - 2⁵ = 55777723 is a prime.

It is a super-2 number, since 2×55777755² = 6222315905680050, which contains 22 as substring.

It is a zygodrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14992 + ... + 18338.

It is an arithmetic number, because the mean of its divisors is an integer number (3073464).

Almost surely, 2^55777755 is an apocalyptic number.

55777755 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55777755 is a deficient number, since it is larger than the sum of its proper divisors (42573093).

55777755 is a wasteful number, since it uses less digits than its factorization.

55777755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3467.

The product of its digits is 1500625, while the sum is 48.

The square root of 55777755 is about 7468.4506425362. The cubic root of 55777755 is about 382.0794472148.

The spelling of 55777755 in words is "fifty-five million, seven hundred seventy-seven thousand, seven hundred fifty-five".