55578036 has 24 divisors (see below), whose sum is σ = 134154720. Its totient is φ = 17887072.

The previous prime is 55578031. The next prime is 55578037. The reversal of 55578036 is 63087555.

It is a junction number, because it is equal to n+sod(n) for n = 55577985 and 55578003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55578031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79506 + ... + 80201.

It is an arithmetic number, because the mean of its divisors is an integer number (5589780).

Almost surely, 2^55578036 is an apocalyptic number.

It is an amenable number.

55578036 is an abundant number, since it is smaller than the sum of its proper divisors (78576684).

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

55578036 is a wasteful number, since it uses less digits than its factorization.

55578036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159743 (or 159741 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 39.

The square root of 55578036 is about 7455.0678065327. The cubic root of 55578036 is about 381.6228746138.

The spelling of 55578036 in words is "fifty-five million, five hundred seventy-eight thousand, thirty-six".