253324261 has 4 divisors (see below), whose sum is σ = 255832524. Its totient is φ = 250816000.

The previous prime is 253324249. The next prime is 253324271. The reversal of 253324261 is 162423352.

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 233020225 + 20304036 = 15265^2 + 4506^2 .

It is a cyclic number.

It is not a de Polignac number, because 253324261 - 2¹³ = 253316069 is a prime.

It is a super-2 number, since 2×253324261² = 128346362422392242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253324271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1253980 + ... + 1254181.

It is an arithmetic number, because the mean of its divisors is an integer number (63958131).

Almost surely, 2^253324261 is an apocalyptic number.

It is an amenable number.

253324261 is a deficient number, since it is larger than the sum of its proper divisors (2508263).

253324261 is a wasteful number, since it uses less digits than its factorization.

253324261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2508262.

The product of its digits is 8640, while the sum is 28.

The square root of 253324261 is about 15916.1635138623. The cubic root of 253324261 is about 632.7404438213.

Subtracting from 253324261 its reverse (162423352), we obtain a palindrome (90900909).

The spelling of 253324261 in words is "two hundred fifty-three million, three hundred twenty-four thousand, two hundred sixty-one".