55609478 has 8 divisors (see below), whose sum is σ = 83454168. Its totient is φ = 27791424.

The previous prime is 55609441. The next prime is 55609481. The reversal of 55609478 is 87490655.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176 + ... + 10547.

It is an arithmetic number, because the mean of its divisors is an integer number (10431771).

Almost surely, 2^55609478 is an apocalyptic number.

55609478 is a deficient number, since it is larger than the sum of its proper divisors (27844690).

55609478 is a wasteful number, since it uses less digits than its factorization.

55609478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13318.

The product of its (nonzero) digits is 302400, while the sum is 44.

The square root of 55609478 is about 7457.1762752398. The cubic root of 55609478 is about 381.6948258454.

The spelling of 55609478 in words is "fifty-five million, six hundred nine thousand, four hundred seventy-eight".