253544641 has 8 divisors (see below), whose sum is σ = 296504384. Its totient is φ = 212269680.

The previous prime is 253544639. The next prime is 253544701. The reversal of 253544641 is 146445352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 253544641 - 2¹ = 253544639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 253544597 and 253544606.

It is not an unprimeable number, because it can be changed into a prime (253544741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 420870 + ... + 421471.

It is an arithmetic number, because the mean of its divisors is an integer number (37063048).

Almost surely, 2^253544641 is an apocalyptic number.

It is an amenable number.

253544641 is a deficient number, since it is larger than the sum of its proper divisors (42959743).

253544641 is an equidigital number, since it uses as much as digits as its factorization.

253544641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842391.

The product of its digits is 57600, while the sum is 34.

The square root of 253544641 is about 15923.0851596040. The cubic root of 253544641 is about 632.9238752880.

Adding to 253544641 its reverse (146445352), we get a palindrome (399989993).

The spelling of 253544641 in words is "two hundred fifty-three million, five hundred forty-four thousand, six hundred forty-one".