2550558780 has 720 divisors, whose sum is σ = 10678542336. Its totient is φ = 502951680.

The previous prime is 2550558749. The next prime is 2550558781. The reversal of 2550558780 is 878550552.

2550558780 is a `hidden beast` number, since 25 + 5 + 0 + 558 + 78 + 0 = 666.

It is a super-3 number, since 3×2550558780³ (a number of 29 digits) contains 333 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 not an unprimeable number, because it can be changed into a prime (2550558781) by changing a digit.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 20083077 + ... + 20083203.

Almost surely, 2^2550558780 is an apocalyptic number.

2550558780 is a gapful number since it is divisible by the number (20) 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 2550558780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5339271168).

2550558780 is an abundant number, since it is smaller than the sum of its proper divisors (8127983556).

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

2550558780 is a wasteful number, since it uses less digits than its factorization.

2550558780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196 (or 178 counting only the distinct ones).

The product of its (nonzero) digits is 560000, while the sum is 45.

The square root of 2550558780 is about 50503.0571351874. The cubic root of 2550558780 is about 1366.2969920892.

The spelling of 2550558780 in words is "two billion, five hundred fifty million, five hundred fifty-eight thousand, seven hundred eighty".