555000091 has 4 divisors (see below), whose sum is σ = 555057792. Its totient is φ = 554942392.

The previous prime is 555000077. The next prime is 555000101. The reversal of 555000091 is 190000555.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 555000091 - 2⁵ = 555000059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (555000031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10555 + ... + 34948.

It is an arithmetic number, because the mean of its divisors is an integer number (138764448).

Almost surely, 2^555000091 is an apocalyptic number.

555000091 is a deficient number, since it is larger than the sum of its proper divisors (57701).

555000091 is a wasteful number, since it uses less digits than its factorization.

555000091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57700.

The product of its (nonzero) digits is 1125, while the sum is 25.

The square root of 555000091 is about 23558.4399101469. The cubic root of 555000091 is about 821.7966214027.

The spelling of 555000091 in words is "five hundred fifty-five million, ninety-one", and thus it is an aban number.