83424557 has 2 divisors, whose sum is σ = 83424558. Its totient is φ = 83424556.

The previous prime is 83424521. The next prime is 83424563. The reversal of 83424557 is 75542438.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41809156 + 41615401 = 6466^2 + 6451^2 .

It is a cyclic number.

It is not a de Polignac number, because 83424557 - 2¹² = 83420461 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 83424557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83424587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41712278 + 41712279.

It is an arithmetic number, because the mean of its divisors is an integer number (41712279).

Almost surely, 2^83424557 is an apocalyptic number.

It is an amenable number.

83424557 is a deficient number, since it is larger than the sum of its proper divisors (1).

83424557 is an equidigital number, since it uses as much as digits as its factorization.

83424557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 134400, while the sum is 38.

The square root of 83424557 is about 9133.7044510976. The cubic root of 83424557 is about 436.9495566719.

The spelling of 83424557 in words is "eighty-three million, four hundred twenty-four thousand, five hundred fifty-seven".