55958489287 has 4 divisors (see below), whose sum is σ = 56248429840. Its totient is φ = 55668548736.

The previous prime is 55958489269. The next prime is 55958489299. The reversal of 55958489287 is 78298485955.

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 55958489287 - 2¹⁹ = 55957964999 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 (55958489227) 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, 144969987 + ... + 144970372.

It is an arithmetic number, because the mean of its divisors is an integer number (14062107460).

Almost surely, 2^55958489287 is an apocalyptic number.

55958489287 is a deficient number, since it is larger than the sum of its proper divisors (289940553).

55958489287 is a wasteful number, since it uses less digits than its factorization.

55958489287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289940552.

The product of its digits is 290304000, while the sum is 70.

The spelling of 55958489287 in words is "fifty-five billion, nine hundred fifty-eight million, four hundred eighty-nine thousand, two hundred eighty-seven".