55077558 has 8 divisors (see below), whose sum is σ = 110155128. Its totient is φ = 18359184.

The previous prime is 55077527. The next prime is 55077559. The reversal of 55077558 is 85577055.

It is a happy number.

55077558 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

55077558 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55077559) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4589791 + ... + 4589802.

It is an arithmetic number, because the mean of its divisors is an integer number (13769391).

Almost surely, 2^55077558 is an apocalyptic number.

55077558 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

55077558 is a wasteful number, since it uses less digits than its factorization.

55077558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9179598.

The product of its (nonzero) digits is 245000, while the sum is 42.

The square root of 55077558 is about 7421.4256042892. The cubic root of 55077558 is about 380.4739193216.

The spelling of 55077558 in words is "fifty-five million, seventy-seven thousand, five hundred fifty-eight".