85775051 has 2 divisors, whose sum is σ = 85775052. Its totient is φ = 85775050.

The previous prime is 85775017. The next prime is 85775057. The reversal of 85775051 is 15057758.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85775051 - 2¹⁴ = 85758667 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 85774996 and 85775014.

It is not a weakly prime, because it can be changed into another prime (85775057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42887525 + 42887526.

It is an arithmetic number, because the mean of its divisors is an integer number (42887526).

Almost surely, 2^85775051 is an apocalyptic number.

85775051 is a deficient number, since it is larger than the sum of its proper divisors (1).

85775051 is an equidigital number, since it uses as much as digits as its factorization.

85775051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49000, while the sum is 38.

The square root of 85775051 is about 9261.4821168105. The cubic root of 85775051 is about 441.0153051628.

The spelling of 85775051 in words is "eighty-five million, seven hundred seventy-five thousand, fifty-one".