85430553 has 16 divisors (see below), whose sum is σ = 123150720. Its totient is φ = 52366464.

The previous prime is 85430539. The next prime is 85430573. The reversal of 85430553 is 35503458.

It is not a de Polignac number, because 85430553 - 2¹² = 85426457 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (85430573) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6093 + ... + 14421.

It is an arithmetic number, because the mean of its divisors is an integer number (7696920).

Almost surely, 2^85430553 is an apocalyptic number.

It is an amenable number.

85430553 is a deficient number, since it is larger than the sum of its proper divisors (37720167).

85430553 is a wasteful number, since it uses less digits than its factorization.

85430553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8608.

The product of its (nonzero) digits is 36000, while the sum is 33.

The square root of 85430553 is about 9242.8649779167. The cubic root of 85430553 is about 440.4240969540.

The spelling of 85430553 in words is "eighty-five million, four hundred thirty thousand, five hundred fifty-three".