78055887 has 32 divisors (see below), whose sum is σ = 129088512. Its totient is φ = 40852224.

The previous prime is 78055877. The next prime is 78055889. The reversal of 78055887 is 78855087.

It is not a de Polignac number, because 78055887 - 2¹¹ = 78053839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78055889) 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, 36358 + ... + 38444.

It is an arithmetic number, because the mean of its divisors is an integer number (4034016).

Almost surely, 2^78055887 is an apocalyptic number.

78055887 is a deficient number, since it is larger than the sum of its proper divisors (51032625).

78055887 is a wasteful number, since it uses less digits than its factorization.

78055887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2247.

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

The square root of 78055887 is about 8834.9242781135. The cubic root of 78055887 is about 427.3678891392.

The spelling of 78055887 in words is "seventy-eight million, fifty-five thousand, eight hundred eighty-seven".