55784266 has 16 divisors (see below), whose sum is σ = 88421760. Its totient is φ = 26321760.

The previous prime is 55784263. The next prime is 55784279. The reversal of 55784266 is 66248755.

55784266 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×55784266² = 6223768666317512, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55784263) 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, 7590 + ... + 13006.

It is an arithmetic number, because the mean of its divisors is an integer number (5526360).

Almost surely, 2^55784266 is an apocalyptic number.

55784266 is a deficient number, since it is larger than the sum of its proper divisors (32637494).

55784266 is a wasteful number, since it uses less digits than its factorization.

55784266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5709.

The product of its digits is 403200, while the sum is 43.

The square root of 55784266 is about 7468.8865301329. The cubic root of 55784266 is about 382.0943134907.

The spelling of 55784266 in words is "fifty-five million, seven hundred eighty-four thousand, two hundred sixty-six".