82531556 has 6 divisors (see below), whose sum is σ = 144430230. Its totient is φ = 41265776.

The previous prime is 82531543. The next prime is 82531601. The reversal of 82531556 is 65513528.

It can be written as a sum of positive squares in only one way, i.e., 61371556 + 21160000 = 7834^2 + 4600^2 .

It is a super-2 number, since 2×82531556² = 13622915471562272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10316441 + ... + 10316448.

It is an arithmetic number, because the mean of its divisors is an integer number (24071705).

Almost surely, 2^82531556 is an apocalyptic number.

It is an amenable number.

82531556 is a deficient number, since it is larger than the sum of its proper divisors (61898674).

82531556 is a wasteful number, since it uses less digits than its factorization.

82531556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20632893 (or 20632891 counting only the distinct ones).

The product of its digits is 36000, while the sum is 35.

The square root of 82531556 is about 9084.6879968439. The cubic root of 82531556 is about 435.3848815403.

The spelling of 82531556 in words is "eighty-two million, five hundred thirty-one thousand, five hundred fifty-six".