55210077 has 24 divisors (see below), whose sum is σ = 87176544. Its totient is φ = 33463584.

The previous prime is 55210073. The next prime is 55210087. The reversal of 55210077 is 77001255.

55210077 is a `hidden beast` number, since 552 + 100 + 7 + 7 = 666.

55210077 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55210077 - 2² = 55210073 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55210077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55210073) 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 23 ways as a sum of consecutive naturals, for example, 4318 + ... + 11360.

It is an arithmetic number, because the mean of its divisors is an integer number (3632356).

Almost surely, 2^55210077 is an apocalyptic number.

It is an amenable number.

55210077 is a deficient number, since it is larger than the sum of its proper divisors (31966467).

55210077 is a wasteful number, since it uses less digits than its factorization.

55210077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7129 (or 7126 counting only the distinct ones).

The product of its (nonzero) digits is 2450, while the sum is 27.

The square root of 55210077 is about 7430.3483767587. The cubic root of 55210077 is about 380.7788205162.

The spelling of 55210077 in words is "fifty-five million, two hundred ten thousand, seventy-seven".