87878055 has 32 divisors (see below), whose sum is σ = 148202496. Its totient is φ = 44377344.

The previous prime is 87878053. The next prime is 87878069. The reversal of 87878055 is 55087878.

It is not a de Polignac number, because 87878055 - 2¹ = 87878053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87877995 and 87878013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87878051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34299 + ... + 36771.

It is an arithmetic number, because the mean of its divisors is an integer number (4631328).

Almost surely, 2^87878055 is an apocalyptic number.

87878055 is a deficient number, since it is larger than the sum of its proper divisors (60324441).

87878055 is a wasteful number, since it uses less digits than its factorization.

87878055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2607.

The product of its (nonzero) digits is 627200, while the sum is 48.

The square root of 87878055 is about 9374.3295760284. The cubic root of 87878055 is about 444.5904661283.

The spelling of 87878055 in words is "eighty-seven million, eight hundred seventy-eight thousand, fifty-five".