55129612 has 12 divisors (see below), whose sum is σ = 98720776. Its totient is φ = 26923680.

The previous prime is 55129603. The next prime is 55129619. The reversal of 55129612 is 21692155.

It is not an unprimeable number, because it can be changed into a prime (55129619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160089 + ... + 160432.

Almost surely, 2^55129612 is an apocalyptic number.

It is an amenable number.

55129612 is a deficient number, since it is larger than the sum of its proper divisors (43591164).

55129612 is a wasteful number, since it uses less digits than its factorization.

55129612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320568 (or 320566 counting only the distinct ones).

The product of its digits is 5400, while the sum is 31.

The square root of 55129612 is about 7424.9317841984. The cubic root of 55129612 is about 380.5937440080.

The spelling of 55129612 in words is "fifty-five million, one hundred twenty-nine thousand, six hundred twelve".