55413172879 has 2 divisors, whose sum is σ = 55413172880. Its totient is φ = 55413172878.

The previous prime is 55413172873. The next prime is 55413172889. The reversal of 55413172879 is 97827131455.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55413172879 - 2⁵ = 55413172847 is a prime.

It is a super-2 number, since 2×55413172879² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55413172873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27706586439 + 27706586440.

It is an arithmetic number, because the mean of its divisors is an integer number (27706586440).

Almost surely, 2^55413172879 is an apocalyptic number.

55413172879 is a deficient number, since it is larger than the sum of its proper divisors (1).

55413172879 is an equidigital number, since it uses as much as digits as its factorization.

55413172879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2116800, while the sum is 52.

The spelling of 55413172879 in words is "fifty-five billion, four hundred thirteen million, one hundred seventy-two thousand, eight hundred seventy-nine".