55333642 has 48 divisors (see below), whose sum is σ = 105000840. Its totient is φ = 21805056.

The previous prime is 55333639. The next prime is 55333709. The reversal of 55333642 is 24633355.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 14130081 + 41203561 = 3759^2 + 6419^2 .

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 215178 + ... + 215434.

Almost surely, 2^55333642 is an apocalyptic number.

55333642 is a deficient number, since it is larger than the sum of its proper divisors (49667198).

55333642 is a wasteful number, since it uses less digits than its factorization.

55333642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312 (or 279 counting only the distinct ones).

The product of its digits is 32400, while the sum is 31.

The square root of 55333642 is about 7438.6586156376. The cubic root of 55333642 is about 381.0626809979.

Adding to 55333642 its reverse (24633355), we get a palindrome (79966997).

The spelling of 55333642 in words is "fifty-five million, three hundred thirty-three thousand, six hundred forty-two".