85358551 has 2 divisors, whose sum is σ = 85358552. Its totient is φ = 85358550.

The previous prime is 85358521. The next prime is 85358591. The reversal of 85358551 is 15585358.

It is an a-pointer prime, because the next prime (85358591) can be obtained adding 85358551 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85358551 - 2¹¹ = 85356503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85358521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42679275 + 42679276.

It is an arithmetic number, because the mean of its divisors is an integer number (42679276).

Almost surely, 2^85358551 is an apocalyptic number.

85358551 is a deficient number, since it is larger than the sum of its proper divisors (1).

85358551 is an equidigital number, since it uses as much as digits as its factorization.

85358551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120000, while the sum is 40.

The square root of 85358551 is about 9238.9691524542. The cubic root of 85358551 is about 440.3003304254.

The spelling of 85358551 in words is "eighty-five million, three hundred fifty-eight thousand, five hundred fifty-one".