73957121 has 24 divisors (see below), whose sum is σ = 90616320. Its totient is φ = 60067392.

The previous prime is 73957111. The next prime is 73957133. The reversal of 73957121 is 12175937.

It is a happy number.

It is not a de Polignac number, because 73957121 - 2¹⁰ = 73956097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (73957111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 154160 + ... + 154638.

It is an arithmetic number, because the mean of its divisors is an integer number (3775680).

Almost surely, 2^73957121 is an apocalyptic number.

It is an amenable number.

73957121 is a deficient number, since it is larger than the sum of its proper divisors (16659199).

73957121 is a wasteful number, since it uses less digits than its factorization.

73957121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653 (or 646 counting only the distinct ones).

The product of its digits is 13230, while the sum is 35.

The square root of 73957121 is about 8599.8326146501. The cubic root of 73957121 is about 419.7525394121.

The spelling of 73957121 in words is "seventy-three million, nine hundred fifty-seven thousand, one hundred twenty-one".