87052649 has 2 divisors, whose sum is σ = 87052650. Its totient is φ = 87052648.

The previous prime is 87052639. The next prime is 87052657. The reversal of 87052649 is 94625078.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48052624 + 39000025 = 6932^2 + 6245^2 .

It is a cyclic number.

It is not a de Polignac number, because 87052649 - 2⁴ = 87052633 is a prime.

It is not a weakly prime, because it can be changed into another prime (87052639) 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, 43526324 + 43526325.

It is an arithmetic number, because the mean of its divisors is an integer number (43526325).

Almost surely, 2^87052649 is an apocalyptic number.

It is an amenable number.

87052649 is a deficient number, since it is larger than the sum of its proper divisors (1).

87052649 is an equidigital number, since it uses as much as digits as its factorization.

87052649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 87052649 is about 9330.2009088765. The cubic root of 87052649 is about 443.1941273735.

The spelling of 87052649 in words is "eighty-seven million, fifty-two thousand, six hundred forty-nine".