85245547 has 2 divisors, whose sum is σ = 85245548. Its totient is φ = 85245546.

The previous prime is 85245539. The next prime is 85245551. The reversal of 85245547 is 74554258.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85245547 - 2³ = 85245539 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (85245527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42622773 + 42622774.

It is an arithmetic number, because the mean of its divisors is an integer number (42622774).

Almost surely, 2^85245547 is an apocalyptic number.

85245547 is a deficient number, since it is larger than the sum of its proper divisors (1).

85245547 is an equidigital number, since it uses as much as digits as its factorization.

85245547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 224000, while the sum is 40.

The square root of 85245547 is about 9232.8515096908. The cubic root of 85245547 is about 440.1059438413.

The spelling of 85245547 in words is "eighty-five million, two hundred forty-five thousand, five hundred forty-seven".