53582721191 has 2 divisors, whose sum is σ = 53582721192. Its totient is φ = 53582721190.

The previous prime is 53582721173. The next prime is 53582721193. The reversal of 53582721191 is 19112728535.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53582721191 is a prime.

It is a super-2 number, since 2×53582721191² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 53582721193, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53582721193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26791360595 + 26791360596.

It is an arithmetic number, because the mean of its divisors is an integer number (26791360596).

Almost surely, 2^53582721191 is an apocalyptic number.

53582721191 is a deficient number, since it is larger than the sum of its proper divisors (1).

53582721191 is an equidigital number, since it uses as much as digits as its factorization.

53582721191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 44.

The spelling of 53582721191 in words is "fifty-three billion, five hundred eighty-two million, seven hundred twenty-one thousand, one hundred ninety-one".