83872556 has 6 divisors (see below), whose sum is σ = 146776980. Its totient is φ = 41936276.

The previous prime is 83872531. The next prime is 83872567. The reversal of 83872556 is 65527838.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10484066 + ... + 10484073.

It is an arithmetic number, because the mean of its divisors is an integer number (24462830).

Almost surely, 2^83872556 is an apocalyptic number.

It is an amenable number.

83872556 is a deficient number, since it is larger than the sum of its proper divisors (62904424).

83872556 is a wasteful number, since it uses less digits than its factorization.

83872556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20968143 (or 20968141 counting only the distinct ones).

The product of its digits is 403200, while the sum is 44.

The square root of 83872556 is about 9158.1961105886. The cubic root of 83872556 is about 437.7303163914.

The spelling of 83872556 in words is "eighty-three million, eight hundred seventy-two thousand, five hundred fifty-six".