82851572 has 12 divisors (see below), whose sum is σ = 146049540. Its totient is φ = 41123136.

The previous prime is 82851541. The next prime is 82851577. The reversal of 82851572 is 27515828.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 36529936 + 46321636 = 6044^2 + 6806^2 .

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82851577) 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, 75047 + ... + 76142.

It is an arithmetic number, because the mean of its divisors is an integer number (12170795).

Almost surely, 2^82851572 is an apocalyptic number.

It is an amenable number.

82851572 is a deficient number, since it is larger than the sum of its proper divisors (63197968).

82851572 is a wasteful number, since it uses less digits than its factorization.

82851572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151330 (or 151328 counting only the distinct ones).

The product of its digits is 44800, while the sum is 38.

The square root of 82851572 is about 9102.2838892225. The cubic root of 82851572 is about 435.9468905374.

The spelling of 82851572 in words is "eighty-two million, eight hundred fifty-one thousand, five hundred seventy-two".