82135550 has 24 divisors (see below), whose sum is σ = 174597456. Its totient is φ = 28160640.

The previous prime is 82135549. The next prime is 82135561. The reversal of 82135550 is 5553128.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 116987 + ... + 117686.

It is an arithmetic number, because the mean of its divisors is an integer number (7274894).

Almost surely, 2^82135550 is an apocalyptic number.

82135550 is an abundant number, since it is smaller than the sum of its proper divisors (92461906).

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

82135550 is a wasteful number, since it uses less digits than its factorization.

82135550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234692 (or 234687 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 82135550 is about 9062.8665443115. The cubic root of 82135550 is about 434.6874047853.

Adding to 82135550 its reverse (5553128), we get a palindrome (87688678).

The spelling of 82135550 in words is "eighty-two million, one hundred thirty-five thousand, five hundred fifty".