85537444 has 6 divisors (see below), whose sum is σ = 149690534. Its totient is φ = 42768720.

The previous prime is 85537409. The next prime is 85537453. The reversal of 85537444 is 44473558.

It can be written as a sum of positive squares in only one way, i.e., 44089600 + 41447844 = 6640^2 + 6438^2 .

It is a junction number, because it is equal to n+sod(n) for n = 85537397 and 85537406.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 10692177 + ... + 10692184.

Almost surely, 2^85537444 is an apocalyptic number.

It is an amenable number.

85537444 is a deficient number, since it is larger than the sum of its proper divisors (64153090).

85537444 is a wasteful number, since it uses less digits than its factorization.

85537444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21384365 (or 21384363 counting only the distinct ones).

The product of its digits is 268800, while the sum is 40.

The square root of 85537444 is about 9248.6455224535. The cubic root of 85537444 is about 440.6077071093.

The spelling of 85537444 in words is "eighty-five million, five hundred thirty-seven thousand, four hundred forty-four".