243425051 has 4 divisors (see below), whose sum is σ = 251277504. Its totient is φ = 235572600.

The previous prime is 243425047. The next prime is 243425053. The reversal of 243425051 is 150524342.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 150524342 = 2 ⋅75262171.

It is a cyclic number.

It is not a de Polignac number, because 243425051 - 2² = 243425047 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 243425051.

It is not an unprimeable number, because it can be changed into a prime (243425053) 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, 3926180 + ... + 3926241.

It is an arithmetic number, because the mean of its divisors is an integer number (62819376).

Almost surely, 2^243425051 is an apocalyptic number.

243425051 is a deficient number, since it is larger than the sum of its proper divisors (7852453).

243425051 is an equidigital number, since it uses as much as digits as its factorization.

243425051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7852452.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 243425051 is about 15602.0848286375. The cubic root of 243425051 is about 624.3887793030.

Adding to 243425051 its reverse (150524342), we get a palindrome (393949393).

The spelling of 243425051 in words is "two hundred forty-three million, four hundred twenty-five thousand, fifty-one".