55765279 has 2 divisors, whose sum is σ = 55765280. Its totient is φ = 55765278.

The previous prime is 55765277. The next prime is 55765291. The reversal of 55765279 is 97256755.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55765279 - 2¹ = 55765277 is a prime.

Together with 55765277, 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 (55765273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27882639 + 27882640.

It is an arithmetic number, because the mean of its divisors is an integer number (27882640).

Almost surely, 2^55765279 is an apocalyptic number.

55765279 is a deficient number, since it is larger than the sum of its proper divisors (1).

55765279 is an equidigital number, since it uses as much as digits as its factorization.

55765279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 661500, while the sum is 46.

The square root of 55765279 is about 7467.6153489585. The cubic root of 55765279 is about 382.0509580878.

The spelling of 55765279 in words is "fifty-five million, seven hundred sixty-five thousand, two hundred seventy-nine".