55240012 has 24 divisors (see below), whose sum is σ = 100548000. Its totient is φ = 26522496.

The previous prime is 55239991. The next prime is 55240013. The reversal of 55240012 is 21004255.

55240012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (55240013) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 21888 + ... + 24280.

It is an arithmetic number, because the mean of its divisors is an integer number (4189500).

Almost surely, 2^55240012 is an apocalyptic number.

It is an amenable number.

55240012 is a deficient number, since it is larger than the sum of its proper divisors (45307988).

55240012 is a wasteful number, since it uses less digits than its factorization.

55240012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2625 (or 2623 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 55240012 is about 7432.3624777052. The cubic root of 55240012 is about 380.8476277286.

Adding to 55240012 its reverse (21004255), we get a palindrome (76244267).

The spelling of 55240012 in words is "fifty-five million, two hundred forty thousand, twelve".