53381579 has 2 divisors, whose sum is σ = 53381580. Its totient is φ = 53381578.

The previous prime is 53381569. The next prime is 53381591. The reversal of 53381579 is 97518335.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53381579 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (53381509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26690789 + 26690790.

It is an arithmetic number, because the mean of its divisors is an integer number (26690790).

Almost surely, 2^53381579 is an apocalyptic number.

53381579 is a deficient number, since it is larger than the sum of its proper divisors (1).

53381579 is an equidigital number, since it uses as much as digits as its factorization.

53381579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 113400, while the sum is 41.

The square root of 53381579 is about 7306.2698417181. The cubic root of 53381579 is about 376.5278796211.

The spelling of 53381579 in words is "fifty-three million, three hundred eighty-one thousand, five hundred seventy-nine".