55420770240 has 280 divisors, whose sum is σ = 215064484272. Its totient is φ = 13435269120.

The previous prime is 55420770227. The next prime is 55420770241. The reversal of 55420770240 is 4207702455.

It is a happy number.

55420770240 is a `hidden beast` number, since 5 + 542 + 0 + 7 + 70 + 2 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 55420770195 and 55420770204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55420770241) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 187932 + ... + 382308.

Almost surely, 2^55420770240 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 55420770240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107532242136).

55420770240 is an abundant number, since it is smaller than the sum of its proper divisors (159643714032).

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

55420770240 is a wasteful number, since it uses less digits than its factorization.

55420770240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194417 (or 194398 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 36.

It can be divided in two parts, 5 and 5420770240, that added together give a palindrome (5420770245).

The spelling of 55420770240 in words is "fifty-five billion, four hundred twenty million, seven hundred seventy thousand, two hundred forty".