55665552011 has 8 divisors (see below), whose sum is σ = 55894958784. Its totient is φ = 55436322240.

The previous prime is 55665551971. The next prime is 55665552037. The reversal of 55665552011 is 11025556655.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55665552011 - 2²² = 55661357707 is a prime.

It is a super-2 number, since 2×55665552011² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55665552011.

It is not an unprimeable number, because it can be changed into a prime (55665552091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 605585 + ... + 691421.

It is an arithmetic number, because the mean of its divisors is an integer number (6986869848).

Almost surely, 2^55665552011 is an apocalyptic number.

55665552011 is a deficient number, since it is larger than the sum of its proper divisors (229406773).

55665552011 is a wasteful number, since it uses less digits than its factorization.

55665552011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88501.

The product of its (nonzero) digits is 225000, while the sum is 41.

The spelling of 55665552011 in words is "fifty-five billion, six hundred sixty-five million, five hundred fifty-two thousand, eleven".