55427783 has 8 divisors (see below), whose sum is σ = 58023936. Its totient is φ = 52882200.

The previous prime is 55427773. The next prime is 55427789. The reversal of 55427783 is 38772455.

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 55427783 - 2⁸ = 55427527 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55427783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55427789) 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, 10391 + ... + 14792.

It is an arithmetic number, because the mean of its divisors is an integer number (7252992).

Almost surely, 2^55427783 is an apocalyptic number.

55427783 is a deficient number, since it is larger than the sum of its proper divisors (2596153).

55427783 is a wasteful number, since it uses less digits than its factorization.

55427783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25285.

The product of its digits is 235200, while the sum is 41.

The square root of 55427783 is about 7444.9837474638. The cubic root of 55427783 is about 381.2786635083.

The spelling of 55427783 in words is "fifty-five million, four hundred twenty-seven thousand, seven hundred eighty-three".