82123755 has 24 divisors (see below), whose sum is σ = 152852112. Its totient is φ = 37541952.

The previous prime is 82123733. The next prime is 82123781. The reversal of 82123755 is 55732128.

It is not a de Polignac number, because 82123755 - 2⁷ = 82123627 is a prime.

It is a super-2 number, since 2×82123755² = 13488622270600050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55132 + ... + 56601.

It is an arithmetic number, because the mean of its divisors is an integer number (6368838).

Almost surely, 2^82123755 is an apocalyptic number.

82123755 is a deficient number, since it is larger than the sum of its proper divisors (70728357).

82123755 is a wasteful number, since it uses less digits than its factorization.

82123755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111755 (or 111748 counting only the distinct ones).

The product of its digits is 16800, while the sum is 33.

The square root of 82123755 is about 9062.2157886468. The cubic root of 82123755 is about 434.6665961610. Note that the first 3 decimals are identical.

The spelling of 82123755 in words is "eighty-two million, one hundred twenty-three thousand, seven hundred fifty-five".