87765255 has 32 divisors (see below), whose sum is σ = 157286400. Its totient is φ = 46430496.

The previous prime is 87765253. The next prime is 87765259. The reversal of 87765255 is 55256778.

It is not a de Polignac number, because 87765255 - 2¹ = 87765253 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 87765255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87765253) 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 31 ways as a sum of consecutive naturals, for example, 14586 + ... + 19704.

It is an arithmetic number, because the mean of its divisors is an integer number (4915200).

Almost surely, 2^87765255 is an apocalyptic number.

87765255 is a deficient number, since it is larger than the sum of its proper divisors (69521145).

87765255 is a wasteful number, since it uses less digits than its factorization.

87765255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5260 (or 5254 counting only the distinct ones).

The product of its digits is 588000, while the sum is 45.

The square root of 87765255 is about 9368.3112138741. The cubic root of 87765255 is about 444.4001596964.

The spelling of 87765255 in words is "eighty-seven million, seven hundred sixty-five thousand, two hundred fifty-five".