55636513 has 2 divisors, whose sum is σ = 55636514. Its totient is φ = 55636512.

The previous prime is 55636507. The next prime is 55636547. The reversal of 55636513 is 31563655.

It is an a-pointer prime, because the next prime (55636547) can be obtained adding 55636513 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48330304 + 7306209 = 6952^2 + 2703^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55636513 is a prime.

It is not a weakly prime, because it can be changed into another prime (55636573) 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, 27818256 + 27818257.

It is an arithmetic number, because the mean of its divisors is an integer number (27818257).

Almost surely, 2^55636513 is an apocalyptic number.

It is an amenable number.

55636513 is a deficient number, since it is larger than the sum of its proper divisors (1).

55636513 is an equidigital number, since it uses as much as digits as its factorization.

55636513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40500, while the sum is 34.

The square root of 55636513 is about 7458.9887384283. The cubic root of 55636513 is about 381.7566705057.

The spelling of 55636513 in words is "fifty-five million, six hundred thirty-six thousand, five hundred thirteen".