85520351 has 12 divisors (see below), whose sum is σ = 101000016. Its totient is φ = 70932960.

The previous prime is 85520339. The next prime is 85520359. The reversal of 85520351 is 15302558.

It is not a de Polignac number, because 85520351 - 2¹⁰ = 85519327 is a prime.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85520359) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 371 + ... + 13083.

It is an arithmetic number, because the mean of its divisors is an integer number (8416668).

Almost surely, 2^85520351 is an apocalyptic number.

85520351 is a deficient number, since it is larger than the sum of its proper divisors (15479665).

85520351 is a wasteful number, since it uses less digits than its factorization.

85520351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12782 (or 12751 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 85520351 is about 9247.7213950248. The cubic root of 85520351 is about 440.5783561845.

The spelling of 85520351 in words is "eighty-five million, five hundred twenty thousand, three hundred fifty-one".