55556611 has 4 divisors (see below), whose sum is σ = 60607224. Its totient is φ = 50506000.

The previous prime is 55556597. The next prime is 55556617. The reversal of 55556611 is 11665555.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55556611 - 2⁷ = 55556483 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (55556617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2525290 + ... + 2525311.

It is an arithmetic number, because the mean of its divisors is an integer number (15151806).

Almost surely, 2^55556611 is an apocalyptic number.

55556611 is a deficient number, since it is larger than the sum of its proper divisors (5050613).

55556611 is a wasteful number, since it uses less digits than its factorization.

55556611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5050612.

The product of its digits is 22500, while the sum is 34.

The square root of 55556611 is about 7453.6307260288. The cubic root of 55556611 is about 381.5738305337.

The spelling of 55556611 in words is "fifty-five million, five hundred fifty-six thousand, six hundred eleven".