554911691 has 4 divisors (see below), whose sum is σ = 554990400. Its totient is φ = 554832984.

The previous prime is 554911667. The next prime is 554911703. The reversal of 554911691 is 196119455.

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 554911691 - 2¹⁴ = 554895307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (554911601) 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, 27611 + ... + 43268.

It is an arithmetic number, because the mean of its divisors is an integer number (138747600).

Almost surely, 2^554911691 is an apocalyptic number.

554911691 is a deficient number, since it is larger than the sum of its proper divisors (78709).

554911691 is an equidigital number, since it uses as much as digits as its factorization.

554911691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78708.

The product of its digits is 48600, while the sum is 41.

The square root of 554911691 is about 23556.5636500743. The cubic root of 554911691 is about 821.7529873686.

The spelling of 554911691 in words is "five hundred fifty-four million, nine hundred eleven thousand, six hundred ninety-one".