55055078 has 32 divisors (see below), whose sum is σ = 94711680. Its totient is φ = 23859840.

The previous prime is 55055071. The next prime is 55055089. The reversal of 55055078 is 87055055.

It is a super-2 number, since 2×55055078² = 6062123227172168, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55055071) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 127523 + ... + 127953.

It is an arithmetic number, because the mean of its divisors is an integer number (2959740).

Almost surely, 2^55055078 is an apocalyptic number.

55055078 is a deficient number, since it is larger than the sum of its proper divisors (39656602).

55055078 is a wasteful number, since it uses less digits than its factorization.

55055078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497 (or 463 counting only the distinct ones).

The product of its (nonzero) digits is 35000, while the sum is 35.

The square root of 55055078 is about 7419.9109159073. The cubic root of 55055078 is about 380.4221485827.

The spelling of 55055078 in words is "fifty-five million, fifty-five thousand, seventy-eight".