55255279 has 4 divisors (see below), whose sum is σ = 55621360. Its totient is φ = 54889200.

The previous prime is 55255273. The next prime is 55255283. The reversal of 55255279 is 97255255.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97255255 = 5 ⋅19451051.

It is a cyclic number.

It is not a de Polignac number, because 55255279 - 2³ = 55255271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55255271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182814 + ... + 183115.

It is an arithmetic number, because the mean of its divisors is an integer number (13905340).

Almost surely, 2^55255279 is an apocalyptic number.

55255279 is a deficient number, since it is larger than the sum of its proper divisors (366081).

55255279 is a wasteful number, since it uses less digits than its factorization.

55255279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366080.

The product of its digits is 157500, while the sum is 40.

The square root of 55255279 is about 7433.3894691453. The cubic root of 55255279 is about 380.8827101804.

The spelling of 55255279 in words is "fifty-five million, two hundred fifty-five thousand, two hundred seventy-nine".