55252780000 has 120 divisors (see below), whose sum is σ = 148288001400. Its totient is φ = 20091840000.

The previous prime is 55252779997. The next prime is 55252780003. The reversal of 55252780000 is 8725255.

It is an interprime number because it is at equal distance from previous prime (55252779997) and next prime (55252780003).

It is a super-3 number, since 3×55252780000³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55252780003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 94426 + ... + 345574.

It is an arithmetic number, because the mean of its divisors is an integer number (1235733345).

Almost surely, 2^55252780000 is an apocalyptic number.

55252780000 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 55252780000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74144000700).

55252780000 is an abundant number, since it is smaller than the sum of its proper divisors (93035221400).

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

55252780000 is a wasteful number, since it uses less digits than its factorization.

55252780000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251190 (or 251167 counting only the distinct ones).

The product of its (nonzero) digits is 28000, while the sum is 34.

The spelling of 55252780000 in words is "fifty-five billion, two hundred fifty-two million, seven hundred eighty thousand".