253244539621 has 8 divisors (see below), whose sum is σ = 253384969824. Its totient is φ = 253104154800.

The previous prime is 253244539577. The next prime is 253244539631. The reversal of 253244539621 is 126935442352.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 253244539621 - 2¹¹ = 253244537573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253244539631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18210771 + ... + 18224671.

It is an arithmetic number, because the mean of its divisors is an integer number (31673121228).

Almost surely, 2^253244539621 is an apocalyptic number.

It is an amenable number.

253244539621 is a deficient number, since it is larger than the sum of its proper divisors (140430203).

253244539621 is a wasteful number, since it uses less digits than its factorization.

253244539621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22691.

The product of its digits is 1555200, while the sum is 46.

The spelling of 253244539621 in words is "two hundred fifty-three billion, two hundred forty-four million, five hundred thirty-nine thousand, six hundred twenty-one".