55222386 has 8 divisors (see below), whose sum is σ = 110444784. Its totient is φ = 18407460.

The previous prime is 55222381. The next prime is 55222399. The reversal of 55222386 is 68322255.

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

55222386 is an admirable number.

It is a super-3 number, since 3×55222386³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (55222381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4601860 + ... + 4601871.

It is an arithmetic number, because the mean of its divisors is an integer number (13805598).

Almost surely, 2^55222386 is an apocalyptic number.

55222386 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55222386 is a wasteful number, since it uses less digits than its factorization.

55222386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9203736.

The product of its digits is 28800, while the sum is 33.

The square root of 55222386 is about 7431.1766228505. The cubic root of 55222386 is about 380.8071164269.

The spelling of 55222386 in words is "fifty-five million, two hundred twenty-two thousand, three hundred eighty-six".