55028002556 has 24 divisors (see below), whose sum is σ = 97550893440. Its totient is φ = 27158060592.

The previous prime is 55028002553. The next prime is 55028002577. The reversal of 55028002556 is 65520082055.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55028002553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91046 + ... + 344013.

It is an arithmetic number, because the mean of its divisors is an integer number (4064620560).

Almost surely, 2^55028002556 is an apocalyptic number.

It is an amenable number.

55028002556 is a deficient number, since it is larger than the sum of its proper divisors (42522890884).

55028002556 is a wasteful number, since it uses less digits than its factorization.

55028002556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435473 (or 435471 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 38.

The spelling of 55028002556 in words is "fifty-five billion, twenty-eight million, two thousand, five hundred fifty-six".