554640143 has 4 divisors (see below), whose sum is σ = 562452048. Its totient is φ = 546828240.

The previous prime is 554640139. The next prime is 554640161. The reversal of 554640143 is 341046455.

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 554640143 - 2² = 554640139 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 (554640643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3905846 + ... + 3905987.

It is an arithmetic number, because the mean of its divisors is an integer number (140613012).

Almost surely, 2^554640143 is an apocalyptic number.

554640143 is a deficient number, since it is larger than the sum of its proper divisors (7811905).

554640143 is an equidigital number, since it uses as much as digits as its factorization.

554640143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7811904.

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 554640143 is about 23550.7992008764. The cubic root of 554640143 is about 821.6189229203.

Adding to 554640143 its reverse (341046455), we get a palindrome (895686598).

The spelling of 554640143 in words is "five hundred fifty-four million, six hundred forty thousand, one hundred forty-three".