85551418 has 4 divisors (see below), whose sum is σ = 128327130. Its totient is φ = 42775708.

The previous prime is 85551409. The next prime is 85551419. The reversal of 85551418 is 81415558.

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., 54715609 + 30835809 = 7397^2 + 5553^2 .

It is not an unprimeable number, because it can be changed into a prime (85551419) 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 as a sum of consecutive naturals, namely, 21387853 + ... + 21387856.

Almost surely, 2^85551418 is an apocalyptic number.

85551418 is a deficient number, since it is larger than the sum of its proper divisors (42775712).

85551418 is a wasteful number, since it uses less digits than its factorization.

85551418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42775711.

The product of its digits is 32000, while the sum is 37.

The square root of 85551418 is about 9249.4009535753. The cubic root of 85551418 is about 440.6316993968.

The spelling of 85551418 in words is "eighty-five million, five hundred fifty-one thousand, four hundred eighteen".