75982121 has 16 divisors (see below), whose sum is σ = 81715200. Its totient is φ = 70441488.

The previous prime is 75982079. The next prime is 75982139. The reversal of 75982121 is 12128957.

It is a cyclic number.

It is not a de Polignac number, because 75982121 - 2⁶ = 75982057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (75982021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 334610 + ... + 334836.

It is an arithmetic number, because the mean of its divisors is an integer number (5107200).

Almost surely, 2^75982121 is an apocalyptic number.

It is an amenable number.

75982121 is a deficient number, since it is larger than the sum of its proper divisors (5733079).

75982121 is a wasteful number, since it uses less digits than its factorization.

75982121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548.

The product of its digits is 10080, while the sum is 35.

The square root of 75982121 is about 8716.7723957896. The cubic root of 75982121 is about 423.5491399039.

The spelling of 75982121 in words is "seventy-five million, nine hundred eighty-two thousand, one hundred twenty-one".