53636987 has 2 divisors, whose sum is σ = 53636988. Its totient is φ = 53636986.

The previous prime is 53636977. The next prime is 53637029. The reversal of 53636987 is 78963635.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53636987 - 2⁶ = 53636923 is a prime.

It is not a weakly prime, because it can be changed into another prime (53636927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26818493 + 26818494.

It is an arithmetic number, because the mean of its divisors is an integer number (26818494).

Almost surely, 2^53636987 is an apocalyptic number.

53636987 is a deficient number, since it is larger than the sum of its proper divisors (1).

53636987 is an equidigital number, since it uses as much as digits as its factorization.

53636987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 816480, while the sum is 47.

The square root of 53636987 is about 7323.7276710702. The cubic root of 53636987 is about 377.1274326645.

The spelling of 53636987 in words is "fifty-three million, six hundred thirty-six thousand, nine hundred eighty-seven".