65555601 has 16 divisors (see below), whose sum is σ = 90196800. Its totient is φ = 42320448.

The previous prime is 65555537. The next prime is 65555603. The reversal of 65555601 is 10655556.

It is not a de Polignac number, because 65555601 - 2⁶ = 65555537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65555603) 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, 24130 + ... + 26708.

It is an arithmetic number, because the mean of its divisors is an integer number (5637300).

Almost surely, 2^65555601 is an apocalyptic number.

It is an amenable number.

65555601 is a deficient number, since it is larger than the sum of its proper divisors (24641199).

65555601 is a wasteful number, since it uses less digits than its factorization.

65555601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2848.

The product of its (nonzero) digits is 22500, while the sum is 33.

The square root of 65555601 is about 8096.6413407042. The cubic root of 65555601 is about 403.2149268043.

The spelling of 65555601 in words is "sixty-five million, five hundred fifty-five thousand, six hundred one".