85982551 has 2 divisors, whose sum is σ = 85982552. Its totient is φ = 85982550.

The previous prime is 85982537. The next prime is 85982587. The reversal of 85982551 is 15528958.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85982551 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85982498 and 85982507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85982531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42991275 + 42991276.

It is an arithmetic number, because the mean of its divisors is an integer number (42991276).

Almost surely, 2^85982551 is an apocalyptic number.

85982551 is a deficient number, since it is larger than the sum of its proper divisors (1).

85982551 is an equidigital number, since it uses as much as digits as its factorization.

85982551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144000, while the sum is 43.

The square root of 85982551 is about 9272.6776607407. The cubic root of 85982551 is about 441.3706415224.

The spelling of 85982551 in words is "eighty-five million, nine hundred eighty-two thousand, five hundred fifty-one".