53189231 has 2 divisors, whose sum is σ = 53189232. Its totient is φ = 53189230.

The previous prime is 53189197. The next prime is 53189249. The reversal of 53189231 is 13298135.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53189231 - 2⁶ = 53189167 is a prime.

It is a super-2 number, since 2×53189231² = 5658188588742722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53189261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26594615 + 26594616.

It is an arithmetic number, because the mean of its divisors is an integer number (26594616).

Almost surely, 2^53189231 is an apocalyptic number.

53189231 is a deficient number, since it is larger than the sum of its proper divisors (1).

53189231 is an equidigital number, since it uses as much as digits as its factorization.

53189231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 32.

The square root of 53189231 is about 7293.0947477734. The cubic root of 53189231 is about 376.0750920453.

The spelling of 53189231 in words is "fifty-three million, one hundred eighty-nine thousand, two hundred thirty-one".