253709533 has 12 divisors (see below), whose sum is σ = 318710560. Its totient is φ = 197695080.

The previous prime is 253709509. The next prime is 253709537. The reversal of 253709533 is 335907352.

It is not a de Polignac number, because 253709533 - 2¹⁷ = 253578461 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 253709492 and 253709501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253709537) 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, 148923 + ... + 150616.

Almost surely, 2^253709533 is an apocalyptic number.

It is an amenable number.

253709533 is a deficient number, since it is larger than the sum of its proper divisors (65001027).

253709533 is a wasteful number, since it uses less digits than its factorization.

253709533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299568 (or 299557 counting only the distinct ones).

The product of its (nonzero) digits is 85050, while the sum is 37.

The square root of 253709533 is about 15928.2620834792. The cubic root of 253709533 is about 633.0610522720.

The spelling of 253709533 in words is "two hundred fifty-three million, seven hundred nine thousand, five hundred thirty-three".