87133201 has 2 divisors, whose sum is σ = 87133202. Its totient is φ = 87133200.

The previous prime is 87133199. The next prime is 87133213. The reversal of 87133201 is 10233178.

87133201 = 6600² + 6601².

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43573201 + 43560000 = 6601^2 + 6600^2 .

It is a cyclic number.

It is not a de Polignac number, because 87133201 - 2¹ = 87133199 is a prime.

Together with 87133199, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (87133231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43566600 + 43566601.

It is an arithmetic number, because the mean of its divisors is an integer number (43566601).

Almost surely, 2^87133201 is an apocalyptic number.

87133201 is the 6601-st centered square number.

It is an amenable number.

87133201 is a deficient number, since it is larger than the sum of its proper divisors (1).

87133201 is an equidigital number, since it uses as much as digits as its factorization.

87133201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 87133201 is about 9334.5166452259. The cubic root of 87133201 is about 443.3307847794.

Adding to 87133201 its reverse (10233178), we get a palindrome (97366379).

The spelling of 87133201 in words is "eighty-seven million, one hundred thirty-three thousand, two hundred one".