253327561 has 4 divisors (see below), whose sum is σ = 259506324. Its totient is φ = 247148800.

The previous prime is 253327559. The next prime is 253327601. The reversal of 253327561 is 165723352.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24561936 + 228765625 = 4956^2 + 15125^2 .

It is a cyclic number.

It is not a de Polignac number, because 253327561 - 2¹ = 253327559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253327511) 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, 3089320 + ... + 3089401.

It is an arithmetic number, because the mean of its divisors is an integer number (64876581).

Almost surely, 2^253327561 is an apocalyptic number.

It is an amenable number.

253327561 is a deficient number, since it is larger than the sum of its proper divisors (6178763).

253327561 is an equidigital number, since it uses as much as digits as its factorization.

253327561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6178762.

The product of its digits is 37800, while the sum is 34.

The square root of 253327561 is about 15916.2671817232. The cubic root of 253327561 is about 632.7431913334.

The spelling of 253327561 in words is "two hundred fifty-three million, three hundred twenty-seven thousand, five hundred sixty-one".