55206983 has 4 divisors (see below), whose sum is σ = 59453688. Its totient is φ = 50960280.

The previous prime is 55206979. The next prime is 55207051. The reversal of 55206983 is 38960255.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38960255 = 5 ⋅7792051.

It is a cyclic number.

It is not a de Polignac number, because 55206983 - 2² = 55206979 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 (55206083) 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, 2123333 + ... + 2123358.

It is an arithmetic number, because the mean of its divisors is an integer number (14863422).

Almost surely, 2^55206983 is an apocalyptic number.

55206983 is a deficient number, since it is larger than the sum of its proper divisors (4246705).

55206983 is a wasteful number, since it uses less digits than its factorization.

55206983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4246704.

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 55206983 is about 7430.1401736441. The cubic root of 55206983 is about 380.7717073722.

The spelling of 55206983 in words is "fifty-five million, two hundred six thousand, nine hundred eighty-three".