53391071 has 2 divisors, whose sum is σ = 53391072. Its totient is φ = 53391070.

The previous prime is 53391049. The next prime is 53391089. The reversal of 53391071 is 17019335.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53391071 - 2²² = 49196767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53391571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26695535 + 26695536.

It is an arithmetic number, because the mean of its divisors is an integer number (26695536).

Almost surely, 2^53391071 is an apocalyptic number.

53391071 is a deficient number, since it is larger than the sum of its proper divisors (1).

53391071 is an equidigital number, since it uses as much as digits as its factorization.

53391071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2835, while the sum is 29.

The square root of 53391071 is about 7306.9193919189. The cubic root of 53391071 is about 376.5501956265.

The spelling of 53391071 in words is "fifty-three million, three hundred ninety-one thousand, seventy-one".