83557056 has 56 divisors (see below), whose sum is σ = 241182144. Its totient is φ = 25319680.

The previous prime is 83557043. The next prime is 83557073. The reversal of 83557056 is 65075538.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17670 + ... + 21893.

It is an arithmetic number, because the mean of its divisors is an integer number (4306824).

Almost surely, 2^83557056 is an apocalyptic number.

It is an amenable number.

83557056 is an abundant number, since it is smaller than the sum of its proper divisors (157625088).

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

83557056 is a wasteful number, since it uses less digits than its factorization.

83557056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39589 (or 39579 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 39.

The square root of 83557056 is about 9140.9548735348. The cubic root of 83557056 is about 437.1807625967.

The spelling of 83557056 in words is "eighty-three million, five hundred fifty-seven thousand, fifty-six".