55655409 has 16 divisors (see below), whose sum is σ = 77099904. Its totient is φ = 35683200.

The previous prime is 55655407. The next prime is 55655443. The reversal of 55655409 is 90455655.

It is not a de Polignac number, because 55655409 - 2¹ = 55655407 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55655407) 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, 5547 + ... + 11919.

It is an arithmetic number, because the mean of its divisors is an integer number (4818744).

Almost surely, 2^55655409 is an apocalyptic number.

It is an amenable number.

55655409 is a deficient number, since it is larger than the sum of its proper divisors (21444495).

55655409 is a wasteful number, since it uses less digits than its factorization.

55655409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6488.

The product of its (nonzero) digits is 135000, while the sum is 39.

The square root of 55655409 is about 7460.2552905380. The cubic root of 55655409 is about 381.7998846777.

The spelling of 55655409 in words is "fifty-five million, six hundred fifty-five thousand, four hundred nine".