73354821 has 4 divisors (see below), whose sum is σ = 97806432. Its totient is φ = 48903212.

The previous prime is 73354817. The next prime is 73354837. The reversal of 73354821 is 12845337.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12845337 = 3 ⋅4281779.

It is a cyclic number.

It is not a de Polignac number, because 73354821 - 2² = 73354817 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73354871) 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, 12225801 + ... + 12225806.

It is an arithmetic number, because the mean of its divisors is an integer number (24451608).

Almost surely, 2^73354821 is an apocalyptic number.

It is an amenable number.

73354821 is a deficient number, since it is larger than the sum of its proper divisors (24451611).

73354821 is a wasteful number, since it uses less digits than its factorization.

73354821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24451610.

The product of its digits is 20160, while the sum is 33.

The square root of 73354821 is about 8564.7429033217. The cubic root of 73354821 is about 418.6099567049.

The spelling of 73354821 in words is "seventy-three million, three hundred fifty-four thousand, eight hundred twenty-one".