83154121 has 4 divisors (see below), whose sum is σ = 85836544. Its totient is φ = 80471700.

The previous prime is 83154103. The next prime is 83154161. The reversal of 83154121 is 12145138.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12145138 = 2 ⋅6072569.

It is a cyclic number.

It is not a de Polignac number, because 83154121 - 2¹¹ = 83152073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83154161) 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, 1341165 + ... + 1341226.

It is an arithmetic number, because the mean of its divisors is an integer number (21459136).

Almost surely, 2^83154121 is an apocalyptic number.

It is an amenable number.

83154121 is a deficient number, since it is larger than the sum of its proper divisors (2682423).

83154121 is a wasteful number, since it uses less digits than its factorization.

83154121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2682422.

The product of its digits is 960, while the sum is 25.

The square root of 83154121 is about 9118.8881449440. Note that the first 3 decimals coincide. The cubic root of 83154121 is about 436.4768948580.

Adding to 83154121 its reverse (12145138), we get a palindrome (95299259).

The spelling of 83154121 in words is "eighty-three million, one hundred fifty-four thousand, one hundred twenty-one".