55251866771587 has 8 divisors (see below), whose sum is σ = 55381528464192. Its totient is φ = 55122211872000.

The previous prime is 55251866771531. The next prime is 55251866771693. The reversal of 55251866771587 is 78517766815255.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55251866771587 - 2¹⁵ = 55251866738819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55251866771987) 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 7 ways as a sum of consecutive naturals, for example, 14775337 + ... + 18133237.

It is an arithmetic number, because the mean of its divisors is an integer number (6922691058024).

Almost surely, 2^{55251866771587} is an apocalyptic number.

55251866771587 is a deficient number, since it is larger than the sum of its proper divisors (129661692605).

55251866771587 is a wasteful number, since it uses less digits than its factorization.

55251866771587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3396509.

The product of its digits is 987840000, while the sum is 73.

The spelling of 55251866771587 in words is "fifty-five trillion, two hundred fifty-one billion, eight hundred sixty-six million, seven hundred seventy-one thousand, five hundred eighty-seven".