87001237 has 2 divisors, whose sum is σ = 87001238. Its totient is φ = 87001236.

The previous prime is 87001219. The next prime is 87001261. The reversal of 87001237 is 73210078.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86285521 + 715716 = 9289^2 + 846^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87001237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87001207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43500618 + 43500619.

It is an arithmetic number, because the mean of its divisors is an integer number (43500619).

Almost surely, 2^87001237 is an apocalyptic number.

It is an amenable number.

87001237 is a deficient number, since it is larger than the sum of its proper divisors (1).

87001237 is an equidigital number, since it uses as much as digits as its factorization.

87001237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 87001237 is about 9327.4453630134. The cubic root of 87001237 is about 443.1068622383.

The spelling of 87001237 in words is "eighty-seven million, one thousand, two hundred thirty-seven".