253001533 has 4 divisors (see below), whose sum is σ = 253037628. Its totient is φ = 252965440.

The previous prime is 253001527. The next prime is 253001537. The reversal of 253001533 is 335100352.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 208138329 + 44863204 = 14427^2 + 6698^2 .

It is a cyclic number.

It is not a de Polignac number, because 253001533 - 2⁵ = 253001501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253001537) 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, 3766 + ... + 22807.

It is an arithmetic number, because the mean of its divisors is an integer number (63259407).

Almost surely, 2^253001533 is an apocalyptic number.

It is an amenable number.

253001533 is a deficient number, since it is larger than the sum of its proper divisors (36095).

253001533 is an equidigital number, since it uses as much as digits as its factorization.

253001533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36094.

The product of its (nonzero) digits is 1350, while the sum is 22.

The square root of 253001533 is about 15906.0219099560. The cubic root of 253001533 is about 632.4716317793.

Adding to 253001533 its reverse (335100352), we get a palindrome (588101885).

The spelling of 253001533 in words is "two hundred fifty-three million, one thousand, five hundred thirty-three".