87057205 has 4 divisors (see below), whose sum is σ = 104468652. Its totient is φ = 69645760.

The previous prime is 87057197. The next prime is 87057211. The reversal of 87057205 is 50275078.

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 35533521 + 51523684 = 5961^2 + 7178^2 .

It is not a de Polignac number, because 87057205 - 2³ = 87057197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8705716 + ... + 8705725.

It is an arithmetic number, because the mean of its divisors is an integer number (26117163).

Almost surely, 2^87057205 is an apocalyptic number.

It is an amenable number.

87057205 is a deficient number, since it is larger than the sum of its proper divisors (17411447).

87057205 is a wasteful number, since it uses less digits than its factorization.

87057205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17411446.

The product of its (nonzero) digits is 19600, while the sum is 34.

The square root of 87057205 is about 9330.4450590526. The cubic root of 87057205 is about 443.2018589292.

The spelling of 87057205 in words is "eighty-seven million, fifty-seven thousand, two hundred five".