53071591 has 2 divisors, whose sum is σ = 53071592. Its totient is φ = 53071590.

The previous prime is 53071583. The next prime is 53071607. The reversal of 53071591 is 19517035.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53071591 - 2³ = 53071583 is a prime.

It is a super-3 number, since 3×53071591³ (a number of 24 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53078591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26535795 + 26535796.

It is an arithmetic number, because the mean of its divisors is an integer number (26535796).

Almost surely, 2^53071591 is an apocalyptic number.

53071591 is a deficient number, since it is larger than the sum of its proper divisors (1).

53071591 is an equidigital number, since it uses as much as digits as its factorization.

53071591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4725, while the sum is 31.

The square root of 53071591 is about 7285.0251200665. The cubic root of 53071591 is about 375.7976290464.

The spelling of 53071591 in words is "fifty-three million, seventy-one thousand, five hundred ninety-one".