85542538 has 32 divisors (see below), whose sum is σ = 139968000. Its totient is φ = 39055104.

The previous prime is 85542533. The next prime is 85542553. The reversal of 85542538 is 83524558.

It is a self number, because there is not a number n which added to its sum of digits gives 85542538.

It is not an unprimeable number, because it can be changed into a prime (85542533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 317868 + ... + 318136.

It is an arithmetic number, because the mean of its divisors is an integer number (4374000).

Almost surely, 2^85542538 is an apocalyptic number.

85542538 is a deficient number, since it is larger than the sum of its proper divisors (54425462).

85542538 is a wasteful number, since it uses less digits than its factorization.

85542538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534.

The product of its digits is 192000, while the sum is 40.

The square root of 85542538 is about 9248.9209100305. The cubic root of 85542538 is about 440.6164534197.

The spelling of 85542538 in words is "eighty-five million, five hundred forty-two thousand, five hundred thirty-eight".