53540231 has 2 divisors, whose sum is σ = 53540232. Its totient is φ = 53540230.

The previous prime is 53540197. The next prime is 53540237. The reversal of 53540231 is 13204535.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53540231 - 2⁶ = 53540167 is a prime.

It is a super-2 number, since 2×53540231² = 5733112671066722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 53540197 and 53540206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53540237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26770115 + 26770116.

It is an arithmetic number, because the mean of its divisors is an integer number (26770116).

Almost surely, 2^53540231 is an apocalyptic number.

53540231 is a deficient number, since it is larger than the sum of its proper divisors (1).

53540231 is an equidigital number, since it uses as much as digits as its factorization.

53540231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 53540231 is about 7317.1190368888. The cubic root of 53540231 is about 376.9005288864.

Adding to 53540231 its reverse (13204535), we get a palindrome (66744766).

The spelling of 53540231 in words is "fifty-three million, five hundred forty thousand, two hundred thirty-one".