553555881 has 24 divisors (see below), whose sum is σ = 843747840. Its totient is φ = 349014336.

The previous prime is 553555867. The next prime is 553555901. The reversal of 553555881 is 188555355.

It is a happy number.

It is not a de Polignac number, because 553555881 - 2¹³ = 553547689 is a prime.

It is a super-2 number, since 2×553555881² = 612848226779372322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (553555811) 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 23 ways as a sum of consecutive naturals, for example, 3400 + ... + 33446.

It is an arithmetic number, because the mean of its divisors is an integer number (35156160).

Almost surely, 2^553555881 is an apocalyptic number.

It is an amenable number.

553555881 is a deficient number, since it is larger than the sum of its proper divisors (290191959).

553555881 is a wasteful number, since it uses less digits than its factorization.

553555881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30165 (or 30162 counting only the distinct ones).

The product of its digits is 600000, while the sum is 45.

The square root of 553555881 is about 23527.7682962069. The cubic root of 553555881 is about 821.0831813681.

It can be divided in two parts, 5535 and 55881, that added together give a palindrome (61416).

The spelling of 553555881 in words is "five hundred fifty-three million, five hundred fifty-five thousand, eight hundred eighty-one".