253385133 has 4 divisors (see below), whose sum is σ = 337846848. Its totient is φ = 168923420.

The previous prime is 253385129. The next prime is 253385137. The reversal of 253385133 is 331583352.

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 an interprime number because it is at equal distance from previous prime (253385129) and next prime (253385137).

It is a cyclic number.

It is not a de Polignac number, because 253385133 - 2² = 253385129 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 253385094 and 253385103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253385137) 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, 42230853 + ... + 42230858.

It is an arithmetic number, because the mean of its divisors is an integer number (84461712).

Almost surely, 2^253385133 is an apocalyptic number.

It is an amenable number.

253385133 is a deficient number, since it is larger than the sum of its proper divisors (84461715).

253385133 is an equidigital number, since it uses as much as digits as its factorization.

253385133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84461714.

The product of its digits is 32400, while the sum is 33.

The square root of 253385133 is about 15918.0756688740. The cubic root of 253385133 is about 632.7911207568.

The spelling of 253385133 in words is "two hundred fifty-three million, three hundred eighty-five thousand, one hundred thirty-three".