55577016 has 192 divisors, whose sum is σ = 179262720. Its totient is φ = 15966720.

The previous prime is 55576999. The next prime is 55577047. The reversal of 55577016 is 61077555.

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 polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 491776 + ... + 491888.

It is an arithmetic number, because the mean of its divisors is an integer number (933660).

Almost surely, 2^55577016 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 55577016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89631360).

55577016 is an abundant number, since it is smaller than the sum of its proper divisors (123685704).

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

55577016 is a wasteful number, since it uses less digits than its factorization.

55577016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168 (or 152 counting only the distinct ones).

The product of its (nonzero) digits is 36750, while the sum is 36.

The square root of 55577016 is about 7454.9993963782. Note that the first 3 decimals coincide. The cubic root of 55577016 is about 381.6205400122.

The spelling of 55577016 in words is "fifty-five million, five hundred seventy-seven thousand, sixteen".