87601201 has 4 divisors (see below), whose sum is σ = 87688692. Its totient is φ = 87513712.

The previous prime is 87601177. The next prime is 87601219. The reversal of 87601201 is 10210678.

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 664225 + 86936976 = 815^2 + 9324^2 .

It is a cyclic number.

It is not a de Polignac number, because 87601201 - 2¹¹ = 87599153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87601231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42226 + ... + 44251.

It is an arithmetic number, because the mean of its divisors is an integer number (21922173).

Almost surely, 2^87601201 is an apocalyptic number.

87601201 is the 5920-th centered pentagonal number.

It is an amenable number.

87601201 is a deficient number, since it is larger than the sum of its proper divisors (87491).

87601201 is a wasteful number, since it uses less digits than its factorization.

87601201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87490.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 87601201 is about 9359.5513247164. The cubic root of 87601201 is about 444.1230906863.

Adding to 87601201 its reverse (10210678), we get a palindrome (97811879).

The spelling of 87601201 in words is "eighty-seven million, six hundred one thousand, two hundred one".