253320361 has 4 divisors (see below), whose sum is σ = 289508992. Its totient is φ = 217131732.

The previous prime is 253320359. The next prime is 253320401. The reversal of 253320361 is 163023352.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 253320361 - 2¹ = 253320359 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253320061) 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, 18094305 + ... + 18094318.

It is an arithmetic number, because the mean of its divisors is an integer number (72377248).

Almost surely, 2^253320361 is an apocalyptic number.

It is an amenable number.

253320361 is a deficient number, since it is larger than the sum of its proper divisors (36188631).

253320361 is an equidigital number, since it uses as much as digits as its factorization.

253320361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36188630.

The product of its (nonzero) digits is 3240, while the sum is 25.

The square root of 253320361 is about 15916.0409964287. The cubic root of 253320361 is about 632.7371967308.

The spelling of 253320361 in words is "two hundred fifty-three million, three hundred twenty thousand, three hundred sixty-one".