554199991 has 8 divisors (see below), whose sum is σ = 556902864. Its totient is φ = 551503680.

The previous prime is 554199977. The next prime is 554200007. The reversal of 554199991 is 199991455.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 554199991 - 2⁹ = 554199479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (554199941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257781 + ... + 259921.

It is an arithmetic number, because the mean of its divisors is an integer number (69612858).

Almost surely, 2^554199991 is an apocalyptic number.

554199991 is a deficient number, since it is larger than the sum of its proper divisors (2702873).

554199991 is a wasteful number, since it uses less digits than its factorization.

554199991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3281.

The product of its digits is 656100, while the sum is 52.

The square root of 554199991 is about 23541.4526102363. The cubic root of 554199991 is about 821.4015249541.

The spelling of 554199991 in words is "five hundred fifty-four million, one hundred ninety-nine thousand, nine hundred ninety-one".