55101642 has 16 divisors (see below), whose sum is σ = 110382912. Its totient is φ = 18337280.

The previous prime is 55101611. The next prime is 55101659. The reversal of 55101642 is 24610155.

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 7 ways as a sum of consecutive naturals, for example, 3318 + ... + 11009.

It is an arithmetic number, because the mean of its divisors is an integer number (6898932).

Almost surely, 2^55101642 is an apocalyptic number.

55101642 is an abundant number, since it is smaller than the sum of its proper divisors (55281270).

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

55101642 is a wasteful number, since it uses less digits than its factorization.

55101642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14973.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 55101642 is about 7423.0480262491. The cubic root of 55101642 is about 380.5293683943.

Adding to 55101642 its reverse (24610155), we get a palindrome (79711797).

The spelling of 55101642 in words is "fifty-five million, one hundred one thousand, six hundred forty-two".