55052279 has 2 divisors, whose sum is σ = 55052280. Its totient is φ = 55052278.

The previous prime is 55052269. The next prime is 55052281. The reversal of 55052279 is 97225055.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55052279 is a prime.

It is a Sophie Germain prime.

Together with 55052281, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55052219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27526139 + 27526140.

It is an arithmetic number, because the mean of its divisors is an integer number (27526140).

Almost surely, 2^55052279 is an apocalyptic number.

55052279 is a deficient number, since it is larger than the sum of its proper divisors (1).

55052279 is an equidigital number, since it uses as much as digits as its factorization.

55052279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31500, while the sum is 35.

The square root of 55052279 is about 7419.7222993856. The cubic root of 55052279 is about 380.4157015865.

The spelling of 55052279 in words is "fifty-five million, fifty-two thousand, two hundred seventy-nine".