55151983 has 2 divisors, whose sum is σ = 55151984. Its totient is φ = 55151982.

The previous prime is 55151981. The next prime is 55151989. The reversal of 55151983 is 38915155.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55151983 - 2¹ = 55151981 is a prime.

Together with 55151981, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55151981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27575991 + 27575992.

It is an arithmetic number, because the mean of its divisors is an integer number (27575992).

Almost surely, 2^55151983 is an apocalyptic number.

55151983 is a deficient number, since it is larger than the sum of its proper divisors (1).

55151983 is an equidigital number, since it uses as much as digits as its factorization.

55151983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27000, while the sum is 37.

The square root of 55151983 is about 7426.4381098882. The cubic root of 55151983 is about 380.6452173205.

The spelling of 55151983 in words is "fifty-five million, one hundred fifty-one thousand, nine hundred eighty-three".