85538146 has 4 divisors (see below), whose sum is σ = 128307222. Its totient is φ = 42769072.

The previous prime is 85538143. The next prime is 85538147. The reversal of 85538146 is 64183558.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 85470025 + 68121 = 9245^2 + 261^2 .

It is a super-2 number, since 2×85538146² = 14633548842234632, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 85538099 and 85538108.

It is not an unprimeable number, because it can be changed into a prime (85538143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21384535 + ... + 21384538.

Almost surely, 2^85538146 is an apocalyptic number.

85538146 is a deficient number, since it is larger than the sum of its proper divisors (42769076).

85538146 is a wasteful number, since it uses less digits than its factorization.

85538146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42769075.

The product of its digits is 115200, while the sum is 40.

The square root of 85538146 is about 9248.6834738789. The cubic root of 85538146 is about 440.6089124519.

The spelling of 85538146 in words is "eighty-five million, five hundred thirty-eight thousand, one hundred forty-six".