55660222 has 8 divisors (see below), whose sum is σ = 86369400. Its totient is φ = 26870424.

The previous prime is 55660219. The next prime is 55660259. The reversal of 55660222 is 22206655.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 479772 + ... + 479887.

It is an arithmetic number, because the mean of its divisors is an integer number (10796175).

Almost surely, 2^55660222 is an apocalyptic number.

55660222 is a deficient number, since it is larger than the sum of its proper divisors (30709178).

55660222 is a wasteful number, since it uses less digits than its factorization.

55660222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959690.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 55660222 is about 7460.5778596567. The cubic root of 55660222 is about 381.8108901961.

Adding to 55660222 its reverse (22206655), we get a palindrome (77866877).

The spelling of 55660222 in words is "fifty-five million, six hundred sixty thousand, two hundred twenty-two".