253021524228 has 192 divisors, whose sum is σ = 747263139840. Its totient is φ = 73287244800.

The previous prime is 253021524157. The next prime is 253021524257. The reversal of 253021524228 is 822425120352.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 253021524192 and 253021524201.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 55110213 + ... + 55114803.

It is an arithmetic number, because the mean of its divisors is an integer number (3891995520).

Almost surely, 2^253021524228 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 253021524228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (373631569920).

253021524228 is an abundant number, since it is smaller than the sum of its proper divisors (494241615612).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

253021524228 is a wasteful number, since it uses less digits than its factorization.

253021524228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6655 (or 6647 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

The spelling of 253021524228 in words is "two hundred fifty-three billion, twenty-one million, five hundred twenty-four thousand, two hundred twenty-eight".