55401127939 has 4 divisors (see below), whose sum is σ = 57809872656. Its totient is φ = 52992383224.

The previous prime is 55401127933. The next prime is 55401127973. The reversal of 55401127939 is 93972110455.

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 55401127939 - 2⁷ = 55401127811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55401127933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1204372324 + ... + 1204372369.

It is an arithmetic number, because the mean of its divisors is an integer number (14452468164).

Almost surely, 2^55401127939 is an apocalyptic number.

55401127939 is a deficient number, since it is larger than the sum of its proper divisors (2408744717).

55401127939 is a wasteful number, since it uses less digits than its factorization.

55401127939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2408744716.

The product of its (nonzero) digits is 340200, while the sum is 46.

The spelling of 55401127939 in words is "fifty-five billion, four hundred one million, one hundred twenty-seven thousand, nine hundred thirty-nine".