55816884 has 48 divisors (see below), whose sum is σ = 146361600. Its totient is φ = 18393408.

The previous prime is 55816853. The next prime is 55816903. The reversal of 55816884 is 48861855.

55816884 is a `hidden beast` number, since 5 + 581 + 68 + 8 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6709 + ... + 12515.

It is an arithmetic number, because the mean of its divisors is an integer number (3049200).

Almost surely, 2^55816884 is an apocalyptic number.

55816884 is a gapful number since it is divisible by the number (54) 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 55816884, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73180800).

55816884 is an abundant number, since it is smaller than the sum of its proper divisors (90544716).

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

55816884 is a wasteful number, since it uses less digits than its factorization.

55816884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5909 (or 5901 counting only the distinct ones).

The product of its digits is 307200, while the sum is 45.

The square root of 55816884 is about 7471.0698029131. The cubic root of 55816884 is about 382.1687713075.

The spelling of 55816884 in words is "fifty-five million, eight hundred sixteen thousand, eight hundred eighty-four".