85526138 has 4 divisors (see below), whose sum is σ = 128289210. Its totient is φ = 42763068.

The previous prime is 85526137. The next prime is 85526141. The reversal of 85526138 is 83162558.

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., 84953089 + 573049 = 9217^2 + 757^2 .

It is not an unprimeable number, because it can be changed into a prime (85526137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21381533 + ... + 21381536.

Almost surely, 2^85526138 is an apocalyptic number.

85526138 is a deficient number, since it is larger than the sum of its proper divisors (42763072).

85526138 is a wasteful number, since it uses less digits than its factorization.

85526138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42763071.

The product of its digits is 57600, while the sum is 38.

The square root of 85526138 is about 9248.0342776181. The cubic root of 85526138 is about 440.5882936611.

The spelling of 85526138 in words is "eighty-five million, five hundred twenty-six thousand, one hundred thirty-eight".