55115776 has 51 divisors (see below), whose sum is σ = 114162841. Its totient is φ = 26607616.

The previous prime is 55115773. The next prime is 55115783. The reversal of 55115776 is 67751155.

The square root of 55115776 is 7424.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 28901376 + 26214400 = 5376^2 + 5120^2 .

It is a Duffinian number.

It is a nialpdrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (55115773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1900530 + ... + 1900558.

Almost surely, 2^55115776 is an apocalyptic number.

55115776 is the 7424-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55115776

55115776 is an abundant number, since it is smaller than the sum of its proper divisors (59047065).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55115776 is an frugal number, since it uses more digits than its factorization.

55115776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90 (or 31 counting only the distinct ones).

The product of its digits is 36750, while the sum is 37.

The cubic root of 55115776 is about 380.5619018610.

The spelling of 55115776 in words is "fifty-five million, one hundred fifteen thousand, seven hundred seventy-six".