55030985 has 8 divisors (see below), whose sum is σ = 66112200. Its totient is φ = 43974784.

The previous prime is 55030981. The next prime is 55030991. The reversal of 55030985 is 58903055.

It can be written as a sum of positive squares in 4 ways, for example, as 16491721 + 38539264 = 4061^2 + 6208^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55030985 - 2² = 55030981 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55030981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1010 + ... + 10539.

It is an arithmetic number, because the mean of its divisors is an integer number (8264025).

Almost surely, 2^55030985 is an apocalyptic number.

It is an amenable number.

55030985 is a deficient number, since it is larger than the sum of its proper divisors (11081215).

55030985 is a wasteful number, since it uses less digits than its factorization.

55030985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12507.

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 55030985 is about 7418.2872012345. The cubic root of 55030985 is about 380.3666475071.

The spelling of 55030985 in words is "fifty-five million, thirty thousand, nine hundred eighty-five".