550242691 has 4 divisors (see below), whose sum is σ = 550324152. Its totient is φ = 550161232.

The previous prime is 550242643. The next prime is 550242697. The reversal of 550242691 is 196242055.

It is a happy number.

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 550242691 - 2²⁹ = 13371779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550242697) 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, 29581 + ... + 44446.

It is an arithmetic number, because the mean of its divisors is an integer number (137581038).

Almost surely, 2^550242691 is an apocalyptic number.

550242691 is a deficient number, since it is larger than the sum of its proper divisors (81461).

550242691 is an equidigital number, since it uses as much as digits as its factorization.

550242691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81460.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 550242691 is about 23457.2524179623. The cubic root of 550242691 is about 819.4417631212.

The spelling of 550242691 in words is "five hundred fifty million, two hundred forty-two thousand, six hundred ninety-one".