83782155 has 16 divisors (see below), whose sum is σ = 135240480. Its totient is φ = 44287488.

The previous prime is 83782129. The next prime is 83782187. The reversal of 83782155 is 55128738.

It is not a de Polignac number, because 83782155 - 2⁶ = 83782091 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23020 + ... + 26409.

It is an arithmetic number, because the mean of its divisors is an integer number (8452530).

Almost surely, 2^83782155 is an apocalyptic number.

83782155 is a deficient number, since it is larger than the sum of its proper divisors (51458325).

83782155 is a wasteful number, since it uses less digits than its factorization.

83782155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49550.

The product of its digits is 67200, while the sum is 39.

The square root of 83782155 is about 9153.2592555876. The cubic root of 83782155 is about 437.5729924471.

The spelling of 83782155 in words is "eighty-three million, seven hundred eighty-two thousand, one hundred fifty-five".