73775121 has 32 divisors (see below), whose sum is σ = 119750400. Its totient is φ = 39438336.

The previous prime is 73775111. The next prime is 73775123. The reversal of 73775121 is 12157737.

It is not a de Polignac number, because 73775121 - 2¹⁰ = 73774097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (73775123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69805 + ... + 70853.

It is an arithmetic number, because the mean of its divisors is an integer number (3742200).

Almost surely, 2^73775121 is an apocalyptic number.

It is an amenable number.

73775121 is a deficient number, since it is larger than the sum of its proper divisors (45975279).

73775121 is a wasteful number, since it uses less digits than its factorization.

73775121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1273.

The product of its digits is 10290, while the sum is 33.

The square root of 73775121 is about 8589.2444952976. The cubic root of 73775121 is about 419.4079356138.

The spelling of 73775121 in words is "seventy-three million, seven hundred seventy-five thousand, one hundred twenty-one".