55447793 has 8 divisors (see below), whose sum is σ = 57798912. Its totient is φ = 53141616.

The previous prime is 55447789. The next prime is 55447811. The reversal of 55447793 is 39774455.

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

It is a cyclic number.

It is not a de Polignac number, because 55447793 - 2² = 55447789 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55447723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8705 + ... + 13662.

It is an arithmetic number, because the mean of its divisors is an integer number (7224864).

Almost surely, 2^55447793 is an apocalyptic number.

It is an amenable number.

55447793 is a deficient number, since it is larger than the sum of its proper divisors (2351119).

55447793 is a wasteful number, since it uses less digits than its factorization.

55447793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22471.

The product of its digits is 529200, while the sum is 44.

The square root of 55447793 is about 7446.3274840689. The cubic root of 55447793 is about 381.3245398284.

The spelling of 55447793 in words is "fifty-five million, four hundred forty-seven thousand, seven hundred ninety-three".