83156530 has 16 divisors (see below), whose sum is σ = 150073560. Its totient is φ = 33175552.

The previous prime is 83156519. The next prime is 83156531. The reversal of 83156530 is 3565138.

It can be written as a sum of positive squares in 4 ways, for example, as 35034561 + 48121969 = 5919^2 + 6937^2 .

It is a junction number, because it is equal to n+sod(n) for n = 83156492 and 83156501.

It is not an unprimeable number, because it can be changed into a prime (83156531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6799 + ... + 14578.

Almost surely, 2^83156530 is an apocalyptic number.

83156530 is a deficient number, since it is larger than the sum of its proper divisors (66917030).

83156530 is a wasteful number, since it uses less digits than its factorization.

83156530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21773.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 83156530 is about 9119.0202324592. The cubic root of 83156530 is about 436.4811097731.

The spelling of 83156530 in words is "eighty-three million, one hundred fifty-six thousand, five hundred thirty".