82551100 has 36 divisors (see below), whose sum is σ = 179830504. Its totient is φ = 32892480.

The previous prime is 82551083. The next prime is 82551103. The reversal of 82551100 is 115528.

It is a super-2 number, since 2×82551100² = 13629368222420000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82551103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26842 + ... + 29758.

Almost surely, 2^82551100 is an apocalyptic number.

It is an amenable number.

82551100 is an abundant number, since it is smaller than the sum of its proper divisors (97279404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82551100 is a wasteful number, since it uses less digits than its factorization.

82551100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3214 (or 3207 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 82551100 is about 9085.7635892643. The cubic root of 82551100 is about 435.4192461355.

Adding to 82551100 its reverse (115528), we get a palindrome (82666628).

The spelling of 82551100 in words is "eighty-two million, five hundred fifty-one thousand, one hundred".