55660233 has 4 divisors (see below), whose sum is σ = 74213648. Its totient is φ = 37106820.

The previous prime is 55660219. The next prime is 55660259. The reversal of 55660233 is 33206655.

55660233 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 55660233 - 2⁵ = 55660201 is a prime.

It is a super-2 number, since 2×55660233² = 6196123075228578, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 55660233.

It is not an unprimeable number, because it can be changed into a prime (55660133) 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 3 ways as a sum of consecutive naturals, for example, 9276703 + ... + 9276708.

It is an arithmetic number, because the mean of its divisors is an integer number (18553412).

Almost surely, 2^55660233 is an apocalyptic number.

It is an amenable number.

55660233 is a deficient number, since it is larger than the sum of its proper divisors (18553415).

55660233 is a wasteful number, since it uses less digits than its factorization.

55660233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18553414.

The product of its (nonzero) digits is 16200, while the sum is 30.

The square root of 55660233 is about 7460.5785968650. The cubic root of 55660233 is about 381.8109153482.

Adding to 55660233 its reverse (33206655), we get a palindrome (88866888).

The spelling of 55660233 in words is "fifty-five million, six hundred sixty thousand, two hundred thirty-three".