55660012 has 6 divisors (see below), whose sum is σ = 97405028. Its totient is φ = 27830004.

The previous prime is 55659997. The next prime is 55660013. The reversal of 55660012 is 21006655.

It is not an unprimeable number, because it can be changed into a prime (55660013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6957498 + ... + 6957505.

Almost surely, 2^55660012 is an apocalyptic number.

It is an amenable number.

55660012 is a deficient number, since it is larger than the sum of its proper divisors (41745016).

55660012 is a wasteful number, since it uses less digits than its factorization.

55660012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13915007 (or 13915005 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 55660012 is about 7460.5637856666. The cubic root of 55660012 is about 381.8104100184.

Adding to 55660012 its reverse (21006655), we get a palindrome (76666667).

The spelling of 55660012 in words is "fifty-five million, six hundred sixty thousand, twelve".