73120501 has 4 divisors (see below), whose sum is σ = 73173100. Its totient is φ = 73067904.

The previous prime is 73120499. The next prime is 73120591. The reversal of 73120501 is 10502137.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10502137 = 503 ⋅20879.

It can be written as a sum of positive squares in 2 ways, for example, as 5058001 + 68062500 = 2249^2 + 8250^2 .

It is a cyclic number.

It is not a de Polignac number, because 73120501 - 2¹ = 73120499 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73120591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24156 + ... + 27013.

It is an arithmetic number, because the mean of its divisors is an integer number (18293275).

Almost surely, 2^73120501 is an apocalyptic number.

It is an amenable number.

73120501 is a deficient number, since it is larger than the sum of its proper divisors (52599).

73120501 is a wasteful number, since it uses less digits than its factorization.

73120501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52598.

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 73120501 is about 8551.0526252620. The cubic root of 73120501 is about 418.1637542048.

Adding to 73120501 its reverse (10502137), we get a palindrome (83622638).

The spelling of 73120501 in words is "seventy-three million, one hundred twenty thousand, five hundred one".