55775727000 has 384 divisors, whose sum is σ = 222411571200. Its totient is φ = 12337056000.

The previous prime is 55775726977. The next prime is 55775727011. The reversal of 55775727000 is 72757755.

55775727000 is a `hidden beast` number, since 5 + 5 + 7 + 7 + 572 + 70 + 0 + 0 = 666.

It is a super-2 number, since 2×55775727000² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1938721 + ... + 1967279.

It is an arithmetic number, because the mean of its divisors is an integer number (579196800).

Almost surely, 2^55775727000 is an apocalyptic number.

55775727000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55775727000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111205785600).

55775727000 is an abundant number, since it is smaller than the sum of its proper divisors (166635844200).

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

55775727000 is a wasteful number, since it uses less digits than its factorization.

55775727000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28624 (or 28607 counting only the distinct ones).

The product of its (nonzero) digits is 600250, while the sum is 45.

The spelling of 55775727000 in words is "fifty-five billion, seven hundred seventy-five million, seven hundred twenty-seven thousand".