82231155 has 24 divisors (see below), whose sum is σ = 142826112. Its totient is φ = 43766784.

The previous prime is 82231147. The next prime is 82231157. The reversal of 82231155 is 55113228.

It is a happy number.

It is not a de Polignac number, because 82231155 - 2³ = 82231147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82231157) 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, 24382 + ... + 27548.

It is an arithmetic number, because the mean of its divisors is an integer number (5951088).

Almost surely, 2^82231155 is an apocalyptic number.

82231155 is a deficient number, since it is larger than the sum of its proper divisors (60594957).

82231155 is a wasteful number, since it uses less digits than its factorization.

82231155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3755 (or 3752 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 82231155 is about 9068.1395556090. The cubic root of 82231155 is about 434.8559967257.

The spelling of 82231155 in words is "eighty-two million, two hundred thirty-one thousand, one hundred fifty-five".