55534403520 has 308 divisors, whose sum is σ = 198428320440. Its totient is φ = 14804135424.

The previous prime is 55534403503. The next prime is 55534403567. The reversal of 55534403520 is 2530443555.

55534403520 is a `hidden beast` number, since 55 + 534 + 40 + 35 + 2 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 43 ways as a sum of consecutive naturals, for example, 18894211 + ... + 18897149.

Almost surely, 2^55534403520 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 55534403520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99214160220).

55534403520 is an abundant number, since it is smaller than the sum of its proper divisors (142893916920).

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

55534403520 is an frugal number, since it uses more digits than its factorization.

55534403520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2986 (or 2949 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 36.

The spelling of 55534403520 in words is "fifty-five billion, five hundred thirty-four million, four hundred three thousand, five hundred twenty".