87427297 has 2 divisors, whose sum is σ = 87427298. Its totient is φ = 87427296.

The previous prime is 87427273. The next prime is 87427343. The reversal of 87427297 is 79272478.

It is an a-pointer prime, because the next prime (87427343) can be obtained adding 87427297 to its sum of digits (46).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84658401 + 2768896 = 9201^2 + 1664^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87427297 is a prime.

It is not a weakly prime, because it can be changed into another prime (87427237) 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, 43713648 + 43713649.

It is an arithmetic number, because the mean of its divisors is an integer number (43713649).

Almost surely, 2^87427297 is an apocalyptic number.

It is an amenable number.

87427297 is a deficient number, since it is larger than the sum of its proper divisors (1).

87427297 is an equidigital number, since it uses as much as digits as its factorization.

87427297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 395136, while the sum is 46.

The square root of 87427297 is about 9350.2565205453. The cubic root of 87427297 is about 443.8290081631.

The spelling of 87427297 in words is "eighty-seven million, four hundred twenty-seven thousand, two hundred ninety-seven".