253200262421 has 4 divisors (see below), whose sum is σ = 253371229644. Its totient is φ = 253029295200.

The previous prime is 253200262397. The next prime is 253200262433. The reversal of 253200262421 is 124262002352.

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 165172339396 + 88027923025 = 406414^2 + 296695^2 .

It is a cyclic number.

It is not a de Polignac number, because 253200262421 - 2²² = 253196068117 is a prime.

It is a super-3 number, since 3×253200262421³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253200262481) 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, 85481390 + ... + 85484351.

It is an arithmetic number, because the mean of its divisors is an integer number (63342807411).

Almost surely, 2^253200262421 is an apocalyptic number.

It is an amenable number.

253200262421 is a deficient number, since it is larger than the sum of its proper divisors (170967223).

253200262421 is a wasteful number, since it uses less digits than its factorization.

253200262421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170967222.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 253200262421 its reverse (124262002352), we get a palindrome (377462264773).

The spelling of 253200262421 in words is "two hundred fifty-three billion, two hundred million, two hundred sixty-two thousand, four hundred twenty-one".