87115263 has 4 divisors (see below), whose sum is σ = 116153688. Its totient is φ = 58076840.

The previous prime is 87115243. The next prime is 87115267. The reversal of 87115263 is 36251178.

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

It is a cyclic number.

It is not a de Polignac number, because 87115263 - 2¹³ = 87107071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87115267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14519208 + ... + 14519213.

It is an arithmetic number, because the mean of its divisors is an integer number (29038422).

Almost surely, 2^87115263 is an apocalyptic number.

87115263 is a deficient number, since it is larger than the sum of its proper divisors (29038425).

87115263 is a wasteful number, since it uses less digits than its factorization.

87115263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29038424.

The product of its digits is 10080, while the sum is 33.

The square root of 87115263 is about 9333.5557533022. Note that the first 3 decimals coincide. The cubic root of 87115263 is about 443.3003600454.

It can be divided in two parts, 87115 and 263, that added together give a palindrome (87378).

The spelling of 87115263 in words is "eighty-seven million, one hundred fifteen thousand, two hundred sixty-three".