55583505 has 24 divisors (see below), whose sum is σ = 97929000. Its totient is φ = 29157120.

The previous prime is 55583491. The next prime is 55583537. The reversal of 55583505 is 50538555.

It can be written as a sum of positive squares in 4 ways, for example, as 408321 + 55175184 = 639^2 + 7428^2 .

It is not a de Polignac number, because 55583505 - 2¹⁰ = 55582481 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 55583505.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7380 + ... + 12869.

It is an arithmetic number, because the mean of its divisors is an integer number (4080375).

Almost surely, 2^55583505 is an apocalyptic number.

It is an amenable number.

55583505 is a deficient number, since it is larger than the sum of its proper divisors (42345495).

55583505 is a wasteful number, since it uses less digits than its factorization.

55583505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20321 (or 20318 counting only the distinct ones).

The product of its (nonzero) digits is 75000, while the sum is 36.

The square root of 55583505 is about 7455.4345949784. The cubic root of 55583505 is about 381.6353917111.

The spelling of 55583505 in words is "fifty-five million, five hundred eighty-three thousand, five hundred five".