85520983 has 2 divisors, whose sum is σ = 85520984. Its totient is φ = 85520982.

The previous prime is 85520977. The next prime is 85520987. The reversal of 85520983 is 38902558.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85520983 - 2⁹ = 85520471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85520987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42760491 + 42760492.

It is an arithmetic number, because the mean of its divisors is an integer number (42760492).

Almost surely, 2^85520983 is an apocalyptic number.

85520983 is a deficient number, since it is larger than the sum of its proper divisors (1).

85520983 is an equidigital number, since it uses as much as digits as its factorization.

85520983 is an evil number, because the sum of its binary digits is even.

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

The square root of 85520983 is about 9247.7555655413. The cubic root of 85520983 is about 440.5794414811.

The spelling of 85520983 in words is "eighty-five million, five hundred twenty thousand, nine hundred eighty-three".