55408012 has 24 divisors (see below), whose sum is σ = 110380032. Its totient is φ = 24090000.

The previous prime is 55408007. The next prime is 55408027. The reversal of 55408012 is 21080455.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26364 + ... + 28387.

It is an arithmetic number, because the mean of its divisors is an integer number (4599168).

Almost surely, 2^55408012 is an apocalyptic number.

It is an amenable number.

55408012 is a deficient number, since it is larger than the sum of its proper divisors (54972020).

55408012 is a wasteful number, since it uses less digits than its factorization.

55408012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54789 (or 54787 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 55408012 is about 7443.6558222422. The cubic root of 55408012 is about 381.2333242908.

Adding to 55408012 its reverse (21080455), we get a palindrome (76488467).

The spelling of 55408012 in words is "fifty-five million, four hundred eight thousand, twelve".