55551055560 has 1024 divisors, whose sum is σ = 238281523200. Its totient is φ = 9986457600.

The previous prime is 55551055541. The next prime is 55551055577. The reversal of 55551055560 is 6555015555.

It is a super-3 number, since 3×55551055560³ (a number of 33 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 128888545 + ... + 128888975.

It is an arithmetic number, because the mean of its divisors is an integer number (232696800).

Almost surely, 2^55551055560 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55551055560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119140761600).

55551055560 is an abundant number, since it is smaller than the sum of its proper divisors (182730467640).

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

55551055560 is a wasteful number, since it uses less digits than its factorization.

55551055560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542 (or 538 counting only the distinct ones).

The product of its (nonzero) digits is 468750, while the sum is 42.

The spelling of 55551055560 in words is "fifty-five billion, five hundred fifty-one million, fifty-five thousand, five hundred sixty".