555220043 has 4 divisors (see below), whose sum is σ = 634537200. Its totient is φ = 475902888.

The previous prime is 555220019. The next prime is 555220049. The reversal of 555220043 is 340022555.

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 555220043 - 2¹⁰ = 555219019 is a prime.

It is a super-2 number, since 2×555220043² = 616538592297843698, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 555219994 and 555220021.

It is not an unprimeable number, because it can be changed into a prime (555220049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39658568 + ... + 39658581.

It is an arithmetic number, because the mean of its divisors is an integer number (158634300).

Almost surely, 2^555220043 is an apocalyptic number.

555220043 is a deficient number, since it is larger than the sum of its proper divisors (79317157).

555220043 is an equidigital number, since it uses as much as digits as its factorization.

555220043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79317156.

The product of its (nonzero) digits is 6000, while the sum is 26.

The square root of 555220043 is about 23563.1076685568. The cubic root of 555220043 is about 821.9051690950.

Adding to 555220043 its reverse (340022555), we get a palindrome (895242598).

The spelling of 555220043 in words is "five hundred fifty-five million, two hundred twenty thousand, forty-three".