55572858781 has 12 divisors (see below), whose sum is σ = 64400888160. Its totient is φ = 47548967360.

The previous prime is 55572858673. The next prime is 55572858823. The reversal of 55572858781 is 18785827555.

It is not a de Polignac number, because 55572858781 - 2¹¹ = 55572856733 is a prime.

It is a super-2 number, since 2×55572858781² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55572858281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8737441 + ... + 8743798.

It is an arithmetic number, because the mean of its divisors is an integer number (5366740680).

Almost surely, 2^55572858781 is an apocalyptic number.

It is an amenable number.

55572858781 is a deficient number, since it is larger than the sum of its proper divisors (8828029379).

55572858781 is a wasteful number, since it uses less digits than its factorization.

55572858781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17481284 (or 17481267 counting only the distinct ones).

The product of its digits is 31360000, while the sum is 61.

The spelling of 55572858781 in words is "fifty-five billion, five hundred seventy-two million, eight hundred fifty-eight thousand, seven hundred eighty-one".