73050821 has 4 divisors (see below), whose sum is σ = 73076832. Its totient is φ = 73024812.

The previous prime is 73050799. The next prime is 73050823. The reversal of 73050821 is 12805037.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73050821 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73050823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8201 + ... + 14606.

It is an arithmetic number, because the mean of its divisors is an integer number (18269208).

Almost surely, 2^73050821 is an apocalyptic number.

It is an amenable number.

73050821 is a deficient number, since it is larger than the sum of its proper divisors (26011).

73050821 is a wasteful number, since it uses less digits than its factorization.

73050821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26010.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 73050821 is about 8546.9773019472. The cubic root of 73050821 is about 418.0308826187.

Adding to 73050821 its reverse (12805037), we get a palindrome (85855858).

The spelling of 73050821 in words is "seventy-three million, fifty thousand, eight hundred twenty-one".