87873253 has 4 divisors (see below), whose sum is σ = 94632748. Its totient is φ = 81113760.

The previous prime is 87873223. The next prime is 87873257. The reversal of 87873253 is 35237878.

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

It can be written as a sum of positive squares in 2 ways, for example, as 30991489 + 56881764 = 5567^2 + 7542^2 .

It is not a de Polignac number, because 87873253 - 2¹⁷ = 87742181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87873257) 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, 3379728 + ... + 3379753.

It is an arithmetic number, because the mean of its divisors is an integer number (23658187).

Almost surely, 2^87873253 is an apocalyptic number.

It is an amenable number.

87873253 is a deficient number, since it is larger than the sum of its proper divisors (6759495).

87873253 is a wasteful number, since it uses less digits than its factorization.

87873253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6759494.

The product of its digits is 282240, while the sum is 43.

The square root of 87873253 is about 9374.0734475467. The cubic root of 87873253 is about 444.5823679279.

The spelling of 87873253 in words is "eighty-seven million, eight hundred seventy-three thousand, two hundred fifty-three".