53191543 has 2 divisors, whose sum is σ = 53191544. Its totient is φ = 53191542.

The previous prime is 53191531. The next prime is 53191553. The reversal of 53191543 is 34519135.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53191543 - 2⁹ = 53191031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53191553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26595771 + 26595772.

It is an arithmetic number, because the mean of its divisors is an integer number (26595772).

Almost surely, 2^53191543 is an apocalyptic number.

53191543 is a deficient number, since it is larger than the sum of its proper divisors (1).

53191543 is an equidigital number, since it uses as much as digits as its factorization.

53191543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8100, while the sum is 31.

The square root of 53191543 is about 7293.2532521502. The cubic root of 53191543 is about 376.0805409742.

The spelling of 53191543 in words is "fifty-three million, one hundred ninety-one thousand, five hundred forty-three".