55311711552 has 168 divisors, whose sum is σ = 166029948864. Its totient is φ = 17572110336.

The previous prime is 55311711541. The next prime is 55311711589. The reversal of 55311711552 is 25511711355.

55311711552 is a `hidden beast` number, since 5 + 5 + 31 + 1 + 71 + 1 + 552 = 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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3741808 + ... + 3756560.

Almost surely, 2^55311711552 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 55311711552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83014974432).

55311711552 is an abundant number, since it is smaller than the sum of its proper divisors (110718237312).

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

55311711552 is a wasteful number, since it uses less digits than its factorization.

55311711552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15077 (or 15064 counting only the distinct ones).

The product of its digits is 26250, while the sum is 36.

The spelling of 55311711552 in words is "fifty-five billion, three hundred eleven million, seven hundred eleven thousand, five hundred fifty-two".