85979051 has 2 divisors, whose sum is σ = 85979052. Its totient is φ = 85979050.

The previous prime is 85979041. The next prime is 85979053. The reversal of 85979051 is 15097958.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85979051 - 2⁶ = 85978987 is a prime.

It is a Sophie Germain prime.

Together with 85979053, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 85978993 and 85979011.

It is not a weakly prime, because it can be changed into another prime (85979053) 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, 42989525 + 42989526.

It is an arithmetic number, because the mean of its divisors is an integer number (42989526).

Almost surely, 2^85979051 is an apocalyptic number.

85979051 is a deficient number, since it is larger than the sum of its proper divisors (1).

85979051 is an equidigital number, since it uses as much as digits as its factorization.

85979051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 113400, while the sum is 44.

The square root of 85979051 is about 9272.4889323202. The cubic root of 85979051 is about 441.3646526399.

The spelling of 85979051 in words is "eighty-five million, nine hundred seventy-nine thousand, fifty-one".