82124051 has 4 divisors (see below), whose sum is σ = 83249112. Its totient is φ = 80998992.

The previous prime is 82124041. The next prime is 82124057. The reversal of 82124051 is 15042128.

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

It is a cyclic number.

It is not a de Polignac number, because 82124051 - 2¹⁸ = 81861907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82124057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 562421 + ... + 562566.

It is an arithmetic number, because the mean of its divisors is an integer number (20812278).

Almost surely, 2^82124051 is an apocalyptic number.

82124051 is a deficient number, since it is larger than the sum of its proper divisors (1125061).

82124051 is a wasteful number, since it uses less digits than its factorization.

82124051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125060.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 82124051 is about 9062.2321201788. The cubic root of 82124051 is about 434.6671183857.

Adding to 82124051 its reverse (15042128), we get a palindrome (97166179).

The spelling of 82124051 in words is "eighty-two million, one hundred twenty-four thousand, fifty-one".