55565601 has 32 divisors (see below), whose sum is σ = 93666048. Its totient is φ = 28512000.

The previous prime is 55565593. The next prime is 55565611. The reversal of 55565601 is 10656555.

It is not a de Polignac number, because 55565601 - 2³ = 55565593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55565611) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7351 + ... + 12851.

It is an arithmetic number, because the mean of its divisors is an integer number (2927064).

Almost surely, 2^55565601 is an apocalyptic number.

It is an amenable number.

55565601 is a deficient number, since it is larger than the sum of its proper divisors (38100447).

55565601 is a wasteful number, since it uses less digits than its factorization.

55565601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5561.

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

The square root of 55565601 is about 7454.2337634394. The cubic root of 55565601 is about 381.5944111251.

The spelling of 55565601 in words is "fifty-five million, five hundred sixty-five thousand, six hundred one".