55537776 has 180 divisors, whose sum is σ = 191853792. Its totient is φ = 14902272.

The previous prime is 55537753. The next prime is 55537837. The reversal of 55537776 is 67773555.

55537776 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 119721 + ... + 120183.

Almost surely, 2^55537776 is an apocalyptic number.

55537776 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55537776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95926896).

55537776 is an abundant number, since it is smaller than the sum of its proper divisors (136316016).

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

55537776 is a wasteful number, since it uses less digits than its factorization.

55537776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508 (or 492 counting only the distinct ones).

The product of its digits is 771750, while the sum is 45.

The square root of 55537776 is about 7452.3671407144. The cubic root of 55537776 is about 381.5307048204.

The spelling of 55537776 in words is "fifty-five million, five hundred thirty-seven thousand, seven hundred seventy-six".