253133433 has 12 divisors (see below), whose sum is σ = 417871168. Its totient is φ = 144647640.

The previous prime is 253133411. The next prime is 253133453. The reversal of 253133433 is 334331352.

It is a happy number.

253133433 is a `hidden beast` number, since 2 + 5 + 313 + 343 + 3 = 666.

253133433 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 253133433 - 2⁶ = 253133369 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 253133397 and 253133406.

It is not an unprimeable number, because it can be changed into a prime (253133453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2008933 + ... + 2009058.

Almost surely, 2^253133433 is an apocalyptic number.

It is an amenable number.

253133433 is a deficient number, since it is larger than the sum of its proper divisors (164737735).

253133433 is a wasteful number, since it uses less digits than its factorization.

253133433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4018004 (or 4018001 counting only the distinct ones).

The product of its digits is 9720, while the sum is 27.

The square root of 253133433 is about 15910.1675981116. The cubic root of 253133433 is about 632.5815237553.

Adding to 253133433 its reverse (334331352), we get a palindrome (587464785).

The spelling of 253133433 in words is "two hundred fifty-three million, one hundred thirty-three thousand, four hundred thirty-three".