75971591 has 2 divisors, whose sum is σ = 75971592. Its totient is φ = 75971590.

The previous prime is 75971563. The next prime is 75971593. The reversal of 75971591 is 19517957.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 75971591 - 2¹⁴ = 75955207 is a prime.

Together with 75971593, 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 (75971593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37985795 + 37985796.

It is an arithmetic number, because the mean of its divisors is an integer number (37985796).

Almost surely, 2^75971591 is an apocalyptic number.

75971591 is a deficient number, since it is larger than the sum of its proper divisors (1).

75971591 is an equidigital number, since it uses as much as digits as its factorization.

75971591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 99225, while the sum is 44.

The square root of 75971591 is about 8716.1683668915. The cubic root of 75971591 is about 423.5295731144.

The spelling of 75971591 in words is "seventy-five million, nine hundred seventy-one thousand, five hundred ninety-one".