85245961 has 2 divisors, whose sum is σ = 85245962. Its totient is φ = 85245960.

The previous prime is 85245959. The next prime is 85245967. The reversal of 85245961 is 16954258.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69405561 + 15840400 = 8331^2 + 3980^2 .

It is a cyclic number.

It is not a de Polignac number, because 85245961 - 2¹ = 85245959 is a prime.

Together with 85245959, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (85245967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42622980 + 42622981.

It is an arithmetic number, because the mean of its divisors is an integer number (42622981).

Almost surely, 2^85245961 is an apocalyptic number.

It is an amenable number.

85245961 is a deficient number, since it is larger than the sum of its proper divisors (1).

85245961 is an equidigital number, since it uses as much as digits as its factorization.

85245961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86400, while the sum is 40.

The square root of 85245961 is about 9232.8739296061. The cubic root of 85245961 is about 440.1066563069.

The spelling of 85245961 in words is "eighty-five million, two hundred forty-five thousand, nine hundred sixty-one".