55609057 has 16 divisors (see below), whose sum is σ = 67571712. Its totient is φ = 44674560.

The previous prime is 55609051. The next prime is 55609061. The reversal of 55609057 is 75090655.

It is not a de Polignac number, because 55609057 - 2³ = 55609049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55609051) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 32608 + ... + 34270.

It is an arithmetic number, because the mean of its divisors is an integer number (4223232).

Almost surely, 2^55609057 is an apocalyptic number.

It is an amenable number.

55609057 is a deficient number, since it is larger than the sum of its proper divisors (11962655).

55609057 is a wasteful number, since it uses less digits than its factorization.

55609057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1968.

The product of its (nonzero) digits is 47250, while the sum is 37.

The square root of 55609057 is about 7457.1480473436. The cubic root of 55609057 is about 381.6938626167.

The spelling of 55609057 in words is "fifty-five million, six hundred nine thousand, fifty-seven".