83781275 has 6 divisors (see below), whose sum is σ = 103888812. Its totient is φ = 67025000.

The previous prime is 83781263. The next prime is 83781281. The reversal of 83781275 is 57218738.

It is not a de Polignac number, because 83781275 - 2⁴ = 83781259 is a prime.

It is a Duffinian number.

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 in 5 ways as a sum of consecutive naturals, for example, 1675601 + ... + 1675650.

It is an arithmetic number, because the mean of its divisors is an integer number (17314802).

Almost surely, 2^83781275 is an apocalyptic number.

83781275 is a deficient number, since it is larger than the sum of its proper divisors (20107537).

83781275 is a wasteful number, since it uses less digits than its factorization.

83781275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3351261 (or 3351256 counting only the distinct ones).

The product of its digits is 94080, while the sum is 41.

The square root of 83781275 is about 9153.2111851525. The cubic root of 83781275 is about 437.5714604360.

The spelling of 83781275 in words is "eighty-three million, seven hundred eighty-one thousand, two hundred seventy-five".