553665143 has 2 divisors, whose sum is σ = 553665144. Its totient is φ = 553665142.

The previous prime is 553665113. The next prime is 553665199. The reversal of 553665143 is 341566355.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 553665143 - 2²⁸ = 285229687 is a prime.

It is equal to p_29027837 and since 553665143 and 29027837 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 553665097 and 553665106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (553665103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276832571 + 276832572.

It is an arithmetic number, because the mean of its divisors is an integer number (276832572).

Almost surely, 2^553665143 is an apocalyptic number.

553665143 is a deficient number, since it is larger than the sum of its proper divisors (1).

553665143 is an equidigital number, since it uses as much as digits as its factorization.

553665143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 162000, while the sum is 38.

The square root of 553665143 is about 23530.0901613232. The cubic root of 553665143 is about 821.1372001773.

The spelling of 553665143 in words is "five hundred fifty-three million, six hundred sixty-five thousand, one hundred forty-three".