55265989177 has 4 divisors (see below), whose sum is σ = 63161130496. Its totient is φ = 47370847860.

The previous prime is 55265989147. The next prime is 55265989211. The reversal of 55265989177 is 77198956255.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77198956255 = 5 ⋅15439791251.

It is not a de Polignac number, because 55265989177 - 2¹⁵ = 55265956409 is a prime.

It is a super-2 number, since 2×55265989177² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55265989147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3947570649 + ... + 3947570662.

It is an arithmetic number, because the mean of its divisors is an integer number (15790282624).

Almost surely, 2^55265989177 is an apocalyptic number.

It is an amenable number.

55265989177 is a deficient number, since it is larger than the sum of its proper divisors (7895141319).

55265989177 is an equidigital number, since it uses as much as digits as its factorization.

55265989177 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7895141318.

The product of its digits is 47628000, while the sum is 64.

The spelling of 55265989177 in words is "fifty-five billion, two hundred sixty-five million, nine hundred eighty-nine thousand, one hundred seventy-seven".