55751983 has 4 divisors (see below), whose sum is σ = 63716560. Its totient is φ = 47787408.

The previous prime is 55751963. The next prime is 55751989. The reversal of 55751983 is 38915755.

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

It is a cyclic number.

It is not a de Polignac number, because 55751983 - 2¹³ = 55743791 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 (55751989) 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, 3982278 + ... + 3982291.

It is an arithmetic number, because the mean of its divisors is an integer number (15929140).

Almost surely, 2^55751983 is an apocalyptic number.

55751983 is a deficient number, since it is larger than the sum of its proper divisors (7964577).

55751983 is an equidigital number, since it uses as much as digits as its factorization.

55751983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7964576.

The product of its digits is 189000, while the sum is 43.

The square root of 55751983 is about 7466.7250518551. The cubic root of 55751983 is about 382.0205918014.

The spelling of 55751983 in words is "fifty-five million, seven hundred fifty-one thousand, nine hundred eighty-three".