85144810 has 8 divisors (see below), whose sum is σ = 153260676. Its totient is φ = 34057920.

The previous prime is 85144799. The next prime is 85144811. The reversal of 85144810 is 1844158.

It can be written as a sum of positive squares in 2 ways, for example, as 76090729 + 9054081 = 8723^2 + 3009^2 .

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

It is a super-2 number, since 2×85144810² = 14499277339872200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85144811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4257231 + ... + 4257250.

Almost surely, 2^85144810 is an apocalyptic number.

85144810 is a deficient number, since it is larger than the sum of its proper divisors (68115866).

85144810 is a wasteful number, since it uses less digits than its factorization.

85144810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8514488.

The product of its (nonzero) digits is 5120, while the sum is 31.

The square root of 85144810 is about 9227.3945401722. The cubic root of 85144810 is about 439.9325137543.

Adding to 85144810 its reverse (1844158), we get a palindrome (86988968).

It can be divided in two parts, 85144 and 810, that multiplied together give a triangular number (68966640 = T₁₁₇₄₄).

The spelling of 85144810 in words is "eighty-five million, one hundred forty-four thousand, eight hundred ten".