87042653 has 2 divisors, whose sum is σ = 87042654. Its totient is φ = 87042652.

The previous prime is 87042643. The next prime is 87042661. The reversal of 87042653 is 35624078.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46758244 + 40284409 = 6838^2 + 6347^2 .

It is a cyclic number.

It is not a de Polignac number, because 87042653 - 2¹⁸ = 86780509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87042643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43521326 + 43521327.

It is an arithmetic number, because the mean of its divisors is an integer number (43521327).

Almost surely, 2^87042653 is an apocalyptic number.

It is an amenable number.

87042653 is a deficient number, since it is larger than the sum of its proper divisors (1).

87042653 is an equidigital number, since it uses as much as digits as its factorization.

87042653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 87042653 is about 9329.6652137148. The cubic root of 87042653 is about 443.1771631641.

The spelling of 87042653 in words is "eighty-seven million, forty-two thousand, six hundred fifty-three".