55120544 has 24 divisors (see below), whose sum is σ = 109136160. Its totient is φ = 27403456.

The previous prime is 55120543. The next prime is 55120547. The reversal of 55120544 is 44502155.

It is a super-4 number, since 4×55120544⁴ (a number of 32 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (55120543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 917 + ... + 10539.

It is an arithmetic number, because the mean of its divisors is an integer number (4547340).

Almost surely, 2^55120544 is an apocalyptic number.

It is an amenable number.

55120544 is a deficient number, since it is larger than the sum of its proper divisors (54015616).

55120544 is a wasteful number, since it uses less digits than its factorization.

55120544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9812 (or 9804 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 55120544 is about 7424.3211137450. The cubic root of 55120544 is about 380.5728755298.

Adding to 55120544 its reverse (44502155), we get a palindrome (99622699).

The spelling of 55120544 in words is "fifty-five million, one hundred twenty thousand, five hundred forty-four".