83981545 has 8 divisors (see below), whose sum is σ = 101151360. Its totient is φ = 66936240.

The previous prime is 83981543. The next prime is 83981549. The reversal of 83981545 is 54518938.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 83981545 - 2¹ = 83981543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83981543) 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, 29635 + ... + 32344.

It is an arithmetic number, because the mean of its divisors is an integer number (12643920).

Almost surely, 2^83981545 is an apocalyptic number.

It is an amenable number.

83981545 is a deficient number, since it is larger than the sum of its proper divisors (17169815).

83981545 is a wasteful number, since it uses less digits than its factorization.

83981545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62255.

The product of its digits is 172800, while the sum is 43.

The square root of 83981545 is about 9164.1445318153. The cubic root of 83981545 is about 437.9198386136.

The spelling of 83981545 in words is "eighty-three million, nine hundred eighty-one thousand, five hundred forty-five".