87381755 has 4 divisors (see below), whose sum is σ = 104858112. Its totient is φ = 69905400.

The previous prime is 87381743. The next prime is 87381769. The reversal of 87381755 is 55718378.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 87381755 - 2⁸ = 87381499 is a prime.

It is a super-2 number, since 2×87381755² = 15271142213760050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8738171 + ... + 8738180.

It is an arithmetic number, because the mean of its divisors is an integer number (26214528).

Almost surely, 2^87381755 is an apocalyptic number.

87381755 is a deficient number, since it is larger than the sum of its proper divisors (17476357).

87381755 is a wasteful number, since it uses less digits than its factorization.

87381755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17476356.

The product of its digits is 235200, while the sum is 44.

The square root of 87381755 is about 9347.8208690582. The cubic root of 87381755 is about 443.7519293707.

It can be divided in two parts, 873 and 81755, that added together give a palindrome (82628).

The spelling of 87381755 in words is "eighty-seven million, three hundred eighty-one thousand, seven hundred fifty-five".