55530611 has 2 divisors, whose sum is σ = 55530612. Its totient is φ = 55530610.

The previous prime is 55530581. The next prime is 55530613. The reversal of 55530611 is 11603555.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55530611 is a prime.

Together with 55530613, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55530613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27765305 + 27765306.

It is an arithmetic number, because the mean of its divisors is an integer number (27765306).

Almost surely, 2^55530611 is an apocalyptic number.

55530611 is a deficient number, since it is larger than the sum of its proper divisors (1).

55530611 is an equidigital number, since it uses as much as digits as its factorization.

55530611 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2250, while the sum is 26.

The square root of 55530611 is about 7451.8864054681. The cubic root of 55530611 is about 381.5142968590.

The spelling of 55530611 in words is "fifty-five million, five hundred thirty thousand, six hundred eleven".