82149017 has 4 divisors (see below), whose sum is σ = 83274420. Its totient is φ = 81023616.

The previous prime is 82148999. The next prime is 82149073. The reversal of 82149017 is 71094128.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20620681 + 61528336 = 4541^2 + 7844^2 .

It is a cyclic number.

It is not a de Polignac number, because 82149017 - 2¹⁸ = 81886873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82149517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 562592 + ... + 562737.

It is an arithmetic number, because the mean of its divisors is an integer number (20818605).

Almost surely, 2^82149017 is an apocalyptic number.

It is an amenable number.

82149017 is a deficient number, since it is larger than the sum of its proper divisors (1125403).

82149017 is a wasteful number, since it uses less digits than its factorization.

82149017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1125402.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 82149017 is about 9063.6094907051. The cubic root of 82149017 is about 434.7111607000.

The spelling of 82149017 in words is "eighty-two million, one hundred forty-nine thousand, seventeen".