55055500278 has 32 divisors (see below), whose sum is σ = 113740734816. Its totient is φ = 17752612608.

The previous prime is 55055500277. The next prime is 55055500301. The reversal of 55055500278 is 87200555055.

It is a super-2 number, since 2×55055500278² (a number of 22 digits) 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 (55055500277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 678351 + ... + 755162.

It is an arithmetic number, because the mean of its divisors is an integer number (3554397963).

Almost surely, 2^55055500278 is an apocalyptic number.

55055500278 is an abundant number, since it is smaller than the sum of its proper divisors (58685234538).

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

55055500278 is a wasteful number, since it uses less digits than its factorization.

55055500278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1433728.

The product of its (nonzero) digits is 350000, while the sum is 42.

The spelling of 55055500278 in words is "fifty-five billion, fifty-five million, five hundred thousand, two hundred seventy-eight".