55021124 has 6 divisors (see below), whose sum is σ = 96286974. Its totient is φ = 27510560.

The previous prime is 55021117. The next prime is 55021151. The reversal of 55021124 is 42112055.

It can be written as a sum of positive squares in only one way, i.e., 52562500 + 2458624 = 7250^2 + 1568^2 .

It is a junction number, because it is equal to n+sod(n) for n = 55021096 and 55021105.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6877637 + ... + 6877644.

It is an arithmetic number, because the mean of its divisors is an integer number (16047829).

Almost surely, 2^55021124 is an apocalyptic number.

It is an amenable number.

55021124 is a deficient number, since it is larger than the sum of its proper divisors (41265850).

55021124 is a wasteful number, since it uses less digits than its factorization.

55021124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13755285 (or 13755283 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 55021124 is about 7417.6225301642. The cubic root of 55021124 is about 380.3439268551.

Adding to 55021124 its reverse (42112055), we get a palindrome (97133179).

The spelling of 55021124 in words is "fifty-five million, twenty-one thousand, one hundred twenty-four".