87005201 has 4 divisors (see below), whose sum is σ = 92123172. Its totient is φ = 81887232.

The previous prime is 87005173. The next prime is 87005203. The reversal of 87005201 is 10250078.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10250078 = 2 ⋅5125039.

It can be written as a sum of positive squares in 2 ways, for example, as 42915601 + 44089600 = 6551^2 + 6640^2 .

It is not a de Polignac number, because 87005201 - 2¹⁴ = 86988817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87005203) 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, 2558960 + ... + 2558993.

It is an arithmetic number, because the mean of its divisors is an integer number (23030793).

Almost surely, 2^87005201 is an apocalyptic number.

It is an amenable number.

87005201 is a deficient number, since it is larger than the sum of its proper divisors (5117971).

87005201 is a wasteful number, since it uses less digits than its factorization.

87005201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5117970.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 87005201 is about 9327.6578517868. The cubic root of 87005201 is about 443.1135918320.

Adding to 87005201 its reverse (10250078), we get a palindrome (97255279).

The spelling of 87005201 in words is "eighty-seven million, five thousand, two hundred one".