55131751427 has 4 divisors (see below), whose sum is σ = 55795989480. Its totient is φ = 54467513376.

The previous prime is 55131751393. The next prime is 55131751457. The reversal of 55131751427 is 72415713155.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55131751427 - 2¹⁰ = 55131750403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55131751457) 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, 332118902 + ... + 332119067.

It is an arithmetic number, because the mean of its divisors is an integer number (13948997370).

Almost surely, 2^55131751427 is an apocalyptic number.

55131751427 is a deficient number, since it is larger than the sum of its proper divisors (664238053).

55131751427 is an equidigital number, since it uses as much as digits as its factorization.

55131751427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664238052.

The product of its digits is 147000, while the sum is 41.

The spelling of 55131751427 in words is "fifty-five billion, one hundred thirty-one million, seven hundred fifty-one thousand, four hundred twenty-seven".