55560511 has 2 divisors, whose sum is σ = 55560512. Its totient is φ = 55560510.

The previous prime is 55560509. The next prime is 55560521. The reversal of 55560511 is 11506555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55560511 - 2¹ = 55560509 is a prime.

It is a super-2 number, since 2×55560511² = 6173940765162242, which contains 22 as substring.

Together with 55560509, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 55560511.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55560521) 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, 27780255 + 27780256.

It is an arithmetic number, because the mean of its divisors is an integer number (27780256).

Almost surely, 2^55560511 is an apocalyptic number.

55560511 is a deficient number, since it is larger than the sum of its proper divisors (1).

55560511 is an equidigital number, since it uses as much as digits as its factorization.

55560511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3750, while the sum is 28.

The square root of 55560511 is about 7453.8923389059. The cubic root of 55560511 is about 381.5827589828.

The spelling of 55560511 in words is "fifty-five million, five hundred sixty thousand, five hundred eleven".