83651121 has 12 divisors (see below), whose sum is σ = 121260048. Its totient is φ = 55568664.

The previous prime is 83651093. The next prime is 83651137. The reversal of 83651121 is 12115638.

83651121 is a `hidden beast` number, since 8 + 3 + 651 + 1 + 2 + 1 = 666.

It is not a de Polignac number, because 83651121 - 2¹⁰ = 83650097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83651221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13875 + ... + 18968.

It is an arithmetic number, because the mean of its divisors is an integer number (10105004).

Almost surely, 2^83651121 is an apocalyptic number.

It is an amenable number.

83651121 is a deficient number, since it is larger than the sum of its proper divisors (37608927).

83651121 is a wasteful number, since it uses less digits than its factorization.

83651121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33132 (or 33129 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 83651121 is about 9146.0986764850. The cubic root of 83651121 is about 437.3447542785.

Adding to 83651121 its reverse (12115638), we get a palindrome (95766759).

The spelling of 83651121 in words is "eighty-three million, six hundred fifty-one thousand, one hundred twenty-one".