85961519 has 8 divisors (see below), whose sum is σ = 98408448. Its totient is φ = 73556280.

The previous prime is 85961509. The next prime is 85961521. The reversal of 85961519 is 91516958.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-85961519 is a prime.

It is a super-2 number, since 2×85961519² = 14778765497574722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85961519.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85961509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5867 + ... + 14364.

It is an arithmetic number, because the mean of its divisors is an integer number (12301056).

Almost surely, 2^85961519 is an apocalyptic number.

85961519 is a deficient number, since it is larger than the sum of its proper divisors (12446929).

85961519 is a wasteful number, since it uses less digits than its factorization.

85961519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20845.

The product of its digits is 97200, while the sum is 44.

The square root of 85961519 is about 9271.5435068817. The cubic root of 85961519 is about 441.3346510251.

The spelling of 85961519 in words is "eighty-five million, nine hundred sixty-one thousand, five hundred nineteen".