55383971 has 2 divisors, whose sum is σ = 55383972. Its totient is φ = 55383970.

The previous prime is 55383967. The next prime is 55383973. The reversal of 55383971 is 17938355.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55383971 - 2² = 55383967 is a prime.

Together with 55383973, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 12.

It is not a weakly prime, because it can be changed into another prime (55383973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27691985 + 27691986.

It is an arithmetic number, because the mean of its divisors is an integer number (27691986).

Almost surely, 2^55383971 is an apocalyptic number.

55383971 is a deficient number, since it is larger than the sum of its proper divisors (1).

55383971 is an equidigital number, since it uses as much as digits as its factorization.

55383971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 113400, while the sum is 41.

The square root of 55383971 is about 7442.0407819361. The cubic root of 55383971 is about 381.1781784980.

The spelling of 55383971 in words is "fifty-five million, three hundred eighty-three thousand, nine hundred seventy-one".