87427237 has 2 divisors, whose sum is σ = 87427238. Its totient is φ = 87427236.

The previous prime is 87427201. The next prime is 87427273. The reversal of 87427237 is 73272478.

Together with next prime (87427273) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (87427201) and next prime (87427273).

It can be written as a sum of positive squares in only one way, i.e., 77686596 + 9740641 = 8814^2 + 3121^2 .

It is a cyclic number.

It is not a de Polignac number, because 87427237 - 2¹¹ = 87425189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87427237.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87427297) 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 as a sum of consecutive naturals, namely, 43713618 + 43713619.

It is an arithmetic number, because the mean of its divisors is an integer number (43713619).

Almost surely, 2^87427237 is an apocalyptic number.

It is an amenable number.

87427237 is a deficient number, since it is larger than the sum of its proper divisors (1).

87427237 is an equidigital number, since it uses as much as digits as its factorization.

87427237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 131712, while the sum is 40.

The square root of 87427237 is about 9350.2533120766. The cubic root of 87427237 is about 443.8289066321.

The spelling of 87427237 in words is "eighty-seven million, four hundred twenty-seven thousand, two hundred thirty-seven".