550691311 has 4 divisors (see below), whose sum is σ = 550772352. Its totient is φ = 550610272.

The previous prime is 550691303. The next prime is 550691329. The reversal of 550691311 is 113196055.

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 550691311 - 2³ = 550691303 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 (550698311) 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, 29290 + ... + 44263.

It is an arithmetic number, because the mean of its divisors is an integer number (137693088).

Almost surely, 2^550691311 is an apocalyptic number.

550691311 is a deficient number, since it is larger than the sum of its proper divisors (81041).

550691311 is an equidigital number, since it uses as much as digits as its factorization.

550691311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81040.

The product of its (nonzero) digits is 4050, while the sum is 31.

The square root of 550691311 is about 23466.8129706614. The cubic root of 550691311 is about 819.6644031230.

The spelling of 550691311 in words is "five hundred fifty million, six hundred ninety-one thousand, three hundred eleven".