87091201 has 2 divisors, whose sum is σ = 87091202. Its totient is φ = 87091200.

The previous prime is 87091181. The next prime is 87091253. The reversal of 87091201 is 10219078.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68807025 + 18284176 = 8295^2 + 4276^2 .

It is a cyclic number.

It is not a de Polignac number, because 87091201 - 2¹⁷ = 86960129 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87091201.

It is not a weakly prime, because it can be changed into another prime (87091261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43545600 + 43545601.

It is an arithmetic number, because the mean of its divisors is an integer number (43545601).

Almost surely, 2^87091201 is an apocalyptic number.

It is an amenable number.

87091201 is a deficient number, since it is larger than the sum of its proper divisors (1).

87091201 is an equidigital number, since it uses as much as digits as its factorization.

87091201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 87091201 is about 9332.2666592849. The cubic root of 87091201 is about 443.2595418040.

The spelling of 87091201 in words is "eighty-seven million, ninety-one thousand, two hundred one".