85561510 has 16 divisors (see below), whose sum is σ = 163070496. Its totient is φ = 32211328.

The previous prime is 85561481. The next prime is 85561523. The reversal of 85561510 is 1516558.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251482 + ... + 251821.

It is an arithmetic number, because the mean of its divisors is an integer number (10191906).

Almost surely, 2^85561510 is an apocalyptic number.

85561510 is a deficient number, since it is larger than the sum of its proper divisors (77508986).

85561510 is a wasteful number, since it uses less digits than its factorization.

85561510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503327.

The product of its (nonzero) digits is 6000, while the sum is 31.

The square root of 85561510 is about 9249.9464863317. The cubic root of 85561510 is about 440.6490249630.

It can be divided in two parts, 855615 and 10, that added together give a square (855625 = 925²).

The spelling of 85561510 in words is "eighty-five million, five hundred sixty-one thousand, five hundred ten".