253521011 has 2 divisors, whose sum is σ = 253521012. Its totient is φ = 253521010.

The previous prime is 253521001. The next prime is 253521041. The reversal of 253521011 is 110125352.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 253521011 - 2²⁶ = 186412147 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (253521001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126760505 + 126760506.

It is an arithmetic number, because the mean of its divisors is an integer number (126760506).

Almost surely, 2^253521011 is an apocalyptic number.

253521011 is a deficient number, since it is larger than the sum of its proper divisors (1).

253521011 is an equidigital number, since it uses as much as digits as its factorization.

253521011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 253521011 is about 15922.3431378676. The cubic root of 253521011 is about 632.9042121421.

Adding to 253521011 its reverse (110125352), we get a palindrome (363646363).

The spelling of 253521011 in words is "two hundred fifty-three million, five hundred twenty-one thousand, eleven".