85751772 has 12 divisors (see below), whose sum is σ = 200087496. Its totient is φ = 28583920.

The previous prime is 85751737. The next prime is 85751773. The reversal of 85751772 is 27715758.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×85751772² = 14706732802279968, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85751773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3572979 + ... + 3573002.

It is an arithmetic number, because the mean of its divisors is an integer number (16673958).

Almost surely, 2^85751772 is an apocalyptic number.

It is an amenable number.

85751772 is an abundant number, since it is smaller than the sum of its proper divisors (114335724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85751772 is a wasteful number, since it uses less digits than its factorization.

85751772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7145988 (or 7145986 counting only the distinct ones).

The product of its digits is 137200, while the sum is 42.

The square root of 85751772 is about 9260.2252672384. The cubic root of 85751772 is about 440.9754049662.

The spelling of 85751772 in words is "eighty-five million, seven hundred fifty-one thousand, seven hundred seventy-two".