555420667 has 4 divisors (see below), whose sum is σ = 567238176. Its totient is φ = 543603160.

The previous prime is 555420661. The next prime is 555420683. The reversal of 555420667 is 766024555.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 766024555 = 5 ⋅153204911.

It is a cyclic number.

It is not a de Polignac number, because 555420667 - 2³ = 555420659 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (555420661) 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, 5908684 + ... + 5908777.

It is an arithmetic number, because the mean of its divisors is an integer number (141809544).

Almost surely, 2^555420667 is an apocalyptic number.

555420667 is a deficient number, since it is larger than the sum of its proper divisors (11817509).

555420667 is a wasteful number, since it uses less digits than its factorization.

555420667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11817508.

The product of its (nonzero) digits is 252000, while the sum is 40.

The square root of 555420667 is about 23567.3644474727. The cubic root of 555420667 is about 822.0041533012.

The spelling of 555420667 in words is "five hundred fifty-five million, four hundred twenty thousand, six hundred sixty-seven".