83156445 has 24 divisors (see below), whose sum is σ = 151725600. Its totient is φ = 42015456.

The previous prime is 83156399. The next prime is 83156449. The reversal of 83156445 is 54465138.

It is a happy number.

83156445 is a `hidden beast` number, since 8 + 3 + 1 + 5 + 644 + 5 = 666.

It is not a de Polignac number, because 83156445 - 2⁷ = 83156317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83156449) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47775 + ... + 49484.

It is an arithmetic number, because the mean of its divisors is an integer number (6321900).

Almost surely, 2^83156445 is an apocalyptic number.

It is an amenable number.

83156445 is a deficient number, since it is larger than the sum of its proper divisors (68569155).

83156445 is a wasteful number, since it uses less digits than its factorization.

83156445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97289 (or 97286 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 83156445 is about 9119.0155718696. The cubic root of 83156445 is about 436.4809610540.

The spelling of 83156445 in words is "eighty-three million, one hundred fifty-six thousand, four hundred forty-five".