85111252 has 6 divisors (see below), whose sum is σ = 148944698. Its totient is φ = 42555624.

The previous prime is 85111237. The next prime is 85111253. The reversal of 85111252 is 25211158.

It can be written as a sum of positive squares in only one way, i.e., 72692676 + 12418576 = 8526^2 + 3524^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85111253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10638903 + ... + 10638910.

Almost surely, 2^85111252 is an apocalyptic number.

It is an amenable number.

85111252 is a deficient number, since it is larger than the sum of its proper divisors (63833446).

85111252 is a wasteful number, since it uses less digits than its factorization.

85111252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21277817 (or 21277815 counting only the distinct ones).

The product of its digits is 800, while the sum is 25.

The square root of 85111252 is about 9225.5759711793. The cubic root of 85111252 is about 439.8747095058.

The spelling of 85111252 in words is "eighty-five million, one hundred eleven thousand, two hundred fifty-two".