87252689 has 2 divisors, whose sum is σ = 87252690. Its totient is φ = 87252688.

The previous prime is 87252637. The next prime is 87252701. The reversal of 87252689 is 98625278.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47499664 + 39753025 = 6892^2 + 6305^2 .

It is a cyclic number.

It is not a de Polignac number, because 87252689 - 2¹² = 87248593 is a prime.

It is a super-2 number, since 2×87252689² = 15226063475461442, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87252589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43626344 + 43626345.

It is an arithmetic number, because the mean of its divisors is an integer number (43626345).

Almost surely, 2^87252689 is an apocalyptic number.

It is an amenable number.

87252689 is a deficient number, since it is larger than the sum of its proper divisors (1).

87252689 is an equidigital number, since it uses as much as digits as its factorization.

87252689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 47.

The square root of 87252689 is about 9340.9147838956. The cubic root of 87252689 is about 443.5333425200.

The spelling of 87252689 in words is "eighty-seven million, two hundred fifty-two thousand, six hundred eighty-nine".