55660947 has 16 divisors (see below), whose sum is σ = 77863680. Its totient is φ = 35319200.

The previous prime is 55660921. The next prime is 55660981. The reversal of 55660947 is 74906655.

It is a cyclic number.

It is not a de Polignac number, because 55660947 - 2⁶ = 55660883 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55660899 and 55660908.

It is not an unprimeable number, because it can be changed into a prime (55660147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1672 + ... + 10682.

It is an arithmetic number, because the mean of its divisors is an integer number (4866480).

Almost surely, 2^55660947 is an apocalyptic number.

55660947 is a deficient number, since it is larger than the sum of its proper divisors (22202733).

55660947 is a wasteful number, since it uses less digits than its factorization.

55660947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9114.

The product of its (nonzero) digits is 226800, while the sum is 42.

The square root of 55660947 is about 7460.6264482281. The cubic root of 55660947 is about 381.8125479431.

The spelling of 55660947 in words is "fifty-five million, six hundred sixty thousand, nine hundred forty-seven".