253500030421 has 8 divisors (see below), whose sum is σ = 276996629664. Its totient is φ = 230078621520.

The previous prime is 253500030361. The next prime is 253500030523. The reversal of 253500030421 is 124030005352.

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

It is not a de Polignac number, because 253500030421 - 2⁷ = 253500030293 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 (253500030221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18790531 + ... + 18804016.

It is an arithmetic number, because the mean of its divisors is an integer number (34624578708).

Almost surely, 2^253500030421 is an apocalyptic number.

It is an amenable number.

253500030421 is a deficient number, since it is larger than the sum of its proper divisors (23496599243).

253500030421 is a wasteful number, since it uses less digits than its factorization.

253500030421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37595171.

The product of its (nonzero) digits is 3600, while the sum is 25.

Adding to 253500030421 its reverse (124030005352), we get a palindrome (377530035773).

The spelling of 253500030421 in words is "two hundred fifty-three billion, five hundred million, thirty thousand, four hundred twenty-one".