55385279 has 2 divisors, whose sum is σ = 55385280. Its totient is φ = 55385278.

The previous prime is 55385257. The next prime is 55385293. The reversal of 55385279 is 97258355.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55385279 - 2⁸ = 55385023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55385249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27692639 + 27692640.

It is an arithmetic number, because the mean of its divisors is an integer number (27692640).

Almost surely, 2^55385279 is an apocalyptic number.

55385279 is a deficient number, since it is larger than the sum of its proper divisors (1).

55385279 is an equidigital number, since it uses as much as digits as its factorization.

55385279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 378000, while the sum is 44.

The square root of 55385279 is about 7442.1286605379. The cubic root of 55385279 is about 381.1811792287.

The spelling of 55385279 in words is "fifty-five million, three hundred eighty-five thousand, two hundred seventy-nine".