83521772 has 6 divisors (see below), whose sum is σ = 146163108. Its totient is φ = 41760884.

The previous prime is 83521771. The next prime is 83521807. The reversal of 83521772 is 27712538.

It is not an unprimeable number, because it can be changed into a prime (83521771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10440218 + ... + 10440225.

It is an arithmetic number, because the mean of its divisors is an integer number (24360518).

Almost surely, 2^83521772 is an apocalyptic number.

It is an amenable number.

83521772 is a deficient number, since it is larger than the sum of its proper divisors (62641336).

83521772 is a wasteful number, since it uses less digits than its factorization.

83521772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20880447 (or 20880445 counting only the distinct ones).

The product of its digits is 23520, while the sum is 35.

The square root of 83521772 is about 9139.0246744387. The cubic root of 83521772 is about 437.1192171948.

The spelling of 83521772 in words is "eighty-three million, five hundred twenty-one thousand, seven hundred seventy-two".