555840807 has 4 divisors (see below), whose sum is σ = 741121080. Its totient is φ = 370560536.

The previous prime is 555840743. The next prime is 555840811. The reversal of 555840807 is 708048555.

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 555840807 - 2⁶ = 555840743 is a prime.

It is a super-2 number, since 2×555840807² = 617918005452822498, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555841807) 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, 92640132 + ... + 92640137.

It is an arithmetic number, because the mean of its divisors is an integer number (185280270).

Almost surely, 2^555840807 is an apocalyptic number.

555840807 is a deficient number, since it is larger than the sum of its proper divisors (185280273).

555840807 is a wasteful number, since it uses less digits than its factorization.

555840807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185280272.

The product of its (nonzero) digits is 224000, while the sum is 42.

The square root of 555840807 is about 23576.2763599344. The cubic root of 555840807 is about 822.2113654811.

The spelling of 555840807 in words is "five hundred fifty-five million, eight hundred forty thousand, eight hundred seven".