55236665 has 8 divisors (see below), whose sum is σ = 72309888. Its totient is φ = 40172080.

The previous prime is 55236661. The next prime is 55236673. The reversal of 55236665 is 56663255.

55236665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 55236665 - 2² = 55236661 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55236661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 502097 + ... + 502206.

It is an arithmetic number, because the mean of its divisors is an integer number (9038736).

Almost surely, 2^55236665 is an apocalyptic number.

55236665 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55236665 is a deficient number, since it is larger than the sum of its proper divisors (17073223).

55236665 is a wasteful number, since it uses less digits than its factorization.

55236665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1004319.

The product of its digits is 162000, while the sum is 38.

The square root of 55236665 is about 7432.1373103570. The cubic root of 55236665 is about 380.8399357031.

The spelling of 55236665 in words is "fifty-five million, two hundred thirty-six thousand, six hundred sixty-five".