554998091 has 4 divisors (see below), whose sum is σ = 555668400. Its totient is φ = 554327784.

The previous prime is 554998063. The next prime is 554998109. The reversal of 554998091 is 190899455.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 190899455 = 5 ⋅38179891.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-554998091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (554998021) 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, 333911 + ... + 335568.

It is an arithmetic number, because the mean of its divisors is an integer number (138917100).

Almost surely, 2^554998091 is an apocalyptic number.

554998091 is a deficient number, since it is larger than the sum of its proper divisors (670309).

554998091 is an equidigital number, since it uses as much as digits as its factorization.

554998091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670308.

The product of its (nonzero) digits is 583200, while the sum is 50.

The square root of 554998091 is about 23558.3974624761. The cubic root of 554998091 is about 821.7956342586.

The spelling of 554998091 in words is "five hundred fifty-four million, nine hundred ninety-eight thousand, ninety-one".