55501144 has 16 divisors (see below), whose sum is σ = 104193000. Its totient is φ = 27716352.

The previous prime is 55501091. The next prime is 55501177. The reversal of 55501144 is 44110555.

It is a happy number.

55501144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×55501144³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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, 3432 + ... + 11080.

Almost surely, 2^55501144 is an apocalyptic number.

It is an amenable number.

55501144 is a deficient number, since it is larger than the sum of its proper divisors (48691856).

55501144 is a wasteful number, since it uses less digits than its factorization.

55501144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8562 (or 8558 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 55501144 is about 7449.9089927327. The cubic root of 55501144 is about 381.4468021284.

Adding to 55501144 its reverse (44110555), we get a palindrome (99611699).

The spelling of 55501144 in words is "fifty-five million, five hundred one thousand, one hundred forty-four".