85505510 has 16 divisors (see below), whose sum is σ = 162010800. Its totient is φ = 32402016.

The previous prime is 85505509. The next prime is 85505551. The reversal of 85505510 is 1550558.

It is a super-2 number, since 2×85505510² = 14622384480720200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224825 + ... + 225204.

It is an arithmetic number, because the mean of its divisors is an integer number (10125675).

Almost surely, 2^85505510 is an apocalyptic number.

85505510 is a deficient number, since it is larger than the sum of its proper divisors (76505290).

85505510 is a wasteful number, since it uses less digits than its factorization.

85505510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450055.

The product of its (nonzero) digits is 5000, while the sum is 29.

The square root of 85505510 is about 9246.9189463302. The cubic root of 85505510 is about 440.5528690672.

The spelling of 85505510 in words is "eighty-five million, five hundred five thousand, five hundred ten".