55278923159 has 8 divisors (see below), whose sum is σ = 56263047120. Its totient is φ = 54296372416.

The previous prime is 55278923153. The next prime is 55278923177. The reversal of 55278923159 is 95132987255.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55278923159 - 2⁸ = 55278922903 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 (55278923153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 322292 + ... + 463065.

It is an arithmetic number, because the mean of its divisors is an integer number (7032880890).

Almost surely, 2^55278923159 is an apocalyptic number.

55278923159 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

55278923159 is a deficient number, since it is larger than the sum of its proper divisors (984123961).

55278923159 is a wasteful number, since it uses less digits than its factorization.

55278923159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786609.

The product of its digits is 6804000, while the sum is 56.

The spelling of 55278923159 in words is "fifty-five billion, two hundred seventy-eight million, nine hundred twenty-three thousand, one hundred fifty-nine".