55939403520 has 2160 divisors, whose sum is σ = 276310372800. Its totient is φ = 10729635840.

The previous prime is 55939403519. The next prime is 55939403539. The reversal of 55939403520 is 2530493955.

55939403520 is a `hidden beast` number, since 5 + 59 + 39 + 40 + 3 + 520 = 666.

It is a tau number, because it is divible by the number of its divisors (2160).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a zygodrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 4303031034 + ... + 4303031046.

Almost surely, 2^55939403520 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 55939403520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138155186400).

55939403520 is an abundant number, since it is smaller than the sum of its proper divisors (220370969280).

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

55939403520 is a wasteful number, since it uses less digits than its factorization.

55939403520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89 (or 41 counting only the distinct ones).

The product of its (nonzero) digits is 729000, while the sum is 45.

The spelling of 55939403520 in words is "fifty-five billion, nine hundred thirty-nine million, four hundred three thousand, five hundred twenty".