82541661 has 8 divisors (see below), whose sum is σ = 110626560. Its totient is φ = 54742272.

The previous prime is 82541633. The next prime is 82541671. The reversal of 82541661 is 16614528.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 82541661 - 2⁵ = 82541629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82541671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70701 + ... + 71858.

It is an arithmetic number, because the mean of its divisors is an integer number (13828320).

Almost surely, 2^82541661 is an apocalyptic number.

It is an amenable number.

82541661 is a deficient number, since it is larger than the sum of its proper divisors (28084899).

82541661 is a wasteful number, since it uses less digits than its factorization.

82541661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142755.

The product of its digits is 11520, while the sum is 33.

The square root of 82541661 is about 9085.2441354099. The cubic root of 82541661 is about 435.4026500355.

It can be divided in two parts, 825 and 41661, that added together give a triangular number (42486 = T₂₉₁).

The spelling of 82541661 in words is "eighty-two million, five hundred forty-one thousand, six hundred sixty-one".