65555552 has 24 divisors (see below), whose sum is σ = 129502296. Its totient is φ = 32666112.

The previous prime is 65555537. The next prime is 65555603. The reversal of 65555552 is 25555556.

It is a happy number.

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

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, 6488 + ... + 13160.

It is an arithmetic number, because the mean of its divisors is an integer number (5395929).

Almost surely, 2^65555552 is an apocalyptic number.

It is an amenable number.

65555552 is a deficient number, since it is larger than the sum of its proper divisors (63946744).

65555552 is a wasteful number, since it uses less digits than its factorization.

65555552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6990 (or 6982 counting only the distinct ones).

The product of its digits is 187500, while the sum is 38.

The square root of 65555552 is about 8096.6383147576. The cubic root of 65555552 is about 403.2148263423.

The spelling of 65555552 in words is "sixty-five million, five hundred fifty-five thousand, five hundred fifty-two".