85601651 has 2 divisors, whose sum is σ = 85601652. Its totient is φ = 85601650.

The previous prime is 85601639. The next prime is 85601657. The reversal of 85601651 is 15610658.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85601651 - 2¹⁴ = 85585267 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (85601657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42800825 + 42800826.

It is an arithmetic number, because the mean of its divisors is an integer number (42800826).

Almost surely, 2^85601651 is an apocalyptic number.

85601651 is a deficient number, since it is larger than the sum of its proper divisors (1).

85601651 is an equidigital number, since it uses as much as digits as its factorization.

85601651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 85601651 is about 9252.1160282392. The cubic root of 85601651 is about 440.7179240397.

The spelling of 85601651 in words is "eighty-five million, six hundred one thousand, six hundred fifty-one".