30020501253 has 4 divisors (see below), whose sum is σ = 40027335008. Its totient is φ = 20013667500.

The previous prime is 30020501237. The next prime is 30020501279. The reversal of 30020501253 is 35210502003.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 30020501253 - 2⁴ = 30020501237 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30020508253) 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, 5003416873 + ... + 5003416878.

It is an arithmetic number, because the mean of its divisors is an integer number (10006833752).

Almost surely, 2^30020501253 is an apocalyptic number.

It is an amenable number.

30020501253 is a deficient number, since it is larger than the sum of its proper divisors (10006833755).

30020501253 is a wasteful number, since it uses less digits than its factorization.

30020501253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10006833754.

The product of its (nonzero) digits is 900, while the sum is 21.

The spelling of 30020501253 in words is "thirty billion, twenty million, five hundred one thousand, two hundred fifty-three".