55005530278 has 4 divisors (see below), whose sum is σ = 82508295420. Its totient is φ = 27502765138.

The previous prime is 55005530263. The next prime is 55005530303. The reversal of 55005530278 is 87203550055.

It is a happy number.

55005530278 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×55005530278² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55005530278.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13751382568 + ... + 13751382571.

It is an arithmetic number, because the mean of its divisors is an integer number (20627073855).

Almost surely, 2^55005530278 is an apocalyptic number.

55005530278 is a deficient number, since it is larger than the sum of its proper divisors (27502765142).

55005530278 is a wasteful number, since it uses less digits than its factorization.

55005530278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27502765141.

The product of its (nonzero) digits is 210000, while the sum is 40.

The spelling of 55005530278 in words is "fifty-five billion, five million, five hundred thirty thousand, two hundred seventy-eight".