55629803520 has 312 divisors, whose sum is σ = 194322104496. Its totient is φ = 14719647744.

The previous prime is 55629803497. The next prime is 55629803531. The reversal of 55629803520 is 2530892655.

55629803520 is a `hidden beast` number, since 5 + 5 + 6 + 298 + 0 + 352 + 0 = 666.

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 23 ways as a sum of consecutive naturals, for example, 25250739 + ... + 25252941.

It is an arithmetic number, because the mean of its divisors is an integer number (622827258).

Almost surely, 2^55629803520 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 55629803520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97161052248).

55629803520 is an abundant number, since it is smaller than the sum of its proper divisors (138692300976).

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

55629803520 is a wasteful number, since it uses less digits than its factorization.

55629803520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2375 (or 2350 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 45.

The spelling of 55629803520 in words is "fifty-five billion, six hundred twenty-nine million, eight hundred three thousand, five hundred twenty".