55630447 has 4 divisors (see below), whose sum is σ = 55732696. Its totient is φ = 55528200.

The previous prime is 55630427. The next prime is 55630483. The reversal of 55630447 is 74403655.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55630447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55630427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50304 + ... + 51397.

It is an arithmetic number, because the mean of its divisors is an integer number (13933174).

Almost surely, 2^55630447 is an apocalyptic number.

55630447 is a deficient number, since it is larger than the sum of its proper divisors (102249).

55630447 is a wasteful number, since it uses less digits than its factorization.

55630447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102248.

The product of its (nonzero) digits is 50400, while the sum is 34.

The square root of 55630447 is about 7458.5821038586. The cubic root of 55630447 is about 381.7427958036.

The spelling of 55630447 in words is "fifty-five million, six hundred thirty thousand, four hundred forty-seven".