55412140 has 36 divisors (see below), whose sum is σ = 135366336. Its totient is φ = 18998112.

The previous prime is 55412131. The next prime is 55412143. The reversal of 55412140 is 4121455.

55412140 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 (55412143) 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 11 ways as a sum of consecutive naturals, for example, 27292 + ... + 29251.

It is an arithmetic number, because the mean of its divisors is an integer number (3760176).

Almost surely, 2^55412140 is an apocalyptic number.

It is an amenable number.

55412140 is an abundant number, since it is smaller than the sum of its proper divisors (79954196).

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

55412140 is a wasteful number, since it uses less digits than its factorization.

55412140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56566 (or 56557 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 55412140 is about 7443.9331001830. The cubic root of 55412140 is about 381.2427915864.

Adding to 55412140 its reverse (4121455), we get a palindrome (59533595).

It can be divided in two parts, 5 and 5412140, that added together give a palindrome (5412145).

The spelling of 55412140 in words is "fifty-five million, four hundred twelve thousand, one hundred forty".