71799457 has 2 divisors, whose sum is σ = 71799458. Its totient is φ = 71799456.

The previous prime is 71799439. The next prime is 71799463. The reversal of 71799457 is 75499717.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71757841 + 41616 = 8471^2 + 204^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71799457 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71799457.

It is not a weakly prime, because it can be changed into another prime (71799407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35899728 + 35899729.

It is an arithmetic number, because the mean of its divisors is an integer number (35899729).

Almost surely, 2^71799457 is an apocalyptic number.

It is an amenable number.

71799457 is a deficient number, since it is larger than the sum of its proper divisors (1).

71799457 is an equidigital number, since it uses as much as digits as its factorization.

71799457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 555660, while the sum is 49.

The square root of 71799457 is about 8473.4560245510. The cubic root of 71799457 is about 415.6301589199.

The spelling of 71799457 in words is "seventy-one million, seven hundred ninety-nine thousand, four hundred fifty-seven".