55015575552 has 624 divisors, whose sum is σ = 195928720000. Its totient is φ = 14826405888.

The previous prime is 55015575551. The next prime is 55015575607. The reversal of 55015575552 is 25557551055.

It is a junction number, because it is equal to n+sod(n) for n = 55015575498 and 55015575507.

It is not an unprimeable number, because it can be changed into a prime (55015575551) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 240242574 + ... + 240242802.

Almost surely, 2^55015575552 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 55015575552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97964360000).

55015575552 is an abundant number, since it is smaller than the sum of its proper divisors (140913144448).

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

55015575552 is a wasteful number, since it uses less digits than its factorization.

55015575552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299 (or 260 counting only the distinct ones).

The product of its (nonzero) digits is 1093750, while the sum is 45.

The spelling of 55015575552 in words is "fifty-five billion, fifteen million, five hundred seventy-five thousand, five hundred fifty-two".