55549116 has 72 divisors (see below), whose sum is σ = 161747040. Its totient is φ = 15745536.

The previous prime is 55549111. The next prime is 55549129. The reversal of 55549116 is 61194555.

55549116 is a `hidden beast` number, since 5 + 554 + 91 + 16 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55549111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33720 + ... + 35328.

Almost surely, 2^55549116 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 55549116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80873520).

55549116 is an abundant number, since it is smaller than the sum of its proper divisors (106197924).

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

55549116 is a wasteful number, since it uses less digits than its factorization.

55549116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1763 (or 1758 counting only the distinct ones).

The product of its digits is 27000, while the sum is 36.

The square root of 55549116 is about 7453.1279339617. The cubic root of 55549116 is about 381.5566707129.

The spelling of 55549116 in words is "fifty-five million, five hundred forty-nine thousand, one hundred sixteen".