253501 has 2 divisors, whose sum is σ = 253502. Its totient is φ = 253500.

The previous prime is 253493. The next prime is 253507. The reversal of 253501 is 105352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 251001 + 2500 = 501^2 + 50^2 .

It is a cyclic number.

It is not a de Polignac number, because 253501 - 2³ = 253493 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126750 + 126751.

It is an arithmetic number, because the mean of its divisors is an integer number (126751).

2²⁵³⁵⁰¹ is an apocalyptic number.

It is an amenable number.

253501 is a deficient number, since it is larger than the sum of its proper divisors (1).

253501 is an equidigital number, since it uses as much as digits as its factorization.

253501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 253501 is about 503.4888280786. The cubic root of 253501 is about 63.2887559506.

Adding to 253501 its reverse (105352), we get a palindrome (358853).

The spelling of 253501 in words is "two hundred fifty-three thousand, five hundred one".