73052121 has 4 divisors (see below), whose sum is σ = 97402832. Its totient is φ = 48701412.

The previous prime is 73052107. The next prime is 73052129. The reversal of 73052121 is 12125037.

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.

It is not a de Polignac number, because 73052121 - 2¹¹ = 73050073 is a prime.

It is a super-2 number, since 2×73052121² = 10673224765197282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73052129) 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, 12175351 + ... + 12175356.

It is an arithmetic number, because the mean of its divisors is an integer number (24350708).

Almost surely, 2^73052121 is an apocalyptic number.

It is an amenable number.

73052121 is a deficient number, since it is larger than the sum of its proper divisors (24350711).

73052121 is a wasteful number, since it uses less digits than its factorization.

73052121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24350710.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 73052121 is about 8547.0533518868. The cubic root of 73052121 is about 418.0333623395.

Adding to 73052121 its reverse (12125037), we get a palindrome (85177158).

The spelling of 73052121 in words is "seventy-three million, fifty-two thousand, one hundred twenty-one".