87771283 has 4 divisors (see below), whose sum is σ = 89912088. Its totient is φ = 85630480.

The previous prime is 87771263. The next prime is 87771293. The reversal of 87771283 is 38217778.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87771283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87771263) 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 3 ways as a sum of consecutive naturals, for example, 1070341 + ... + 1070422.

It is an arithmetic number, because the mean of its divisors is an integer number (22478022).

Almost surely, 2^87771283 is an apocalyptic number.

87771283 is a deficient number, since it is larger than the sum of its proper divisors (2140805).

87771283 is a wasteful number, since it uses less digits than its factorization.

87771283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2140804.

The product of its digits is 131712, while the sum is 43.

The square root of 87771283 is about 9368.6329312232. The cubic root of 87771283 is about 444.4103337409.

The spelling of 87771283 in words is "eighty-seven million, seven hundred seventy-one thousand, two hundred eighty-three".