73320550 has 48 divisors (see below), whose sum is σ = 143919360. Its totient is φ = 27735840.

The previous prime is 73320509. The next prime is 73320551. The reversal of 73320550 is 5502337.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73320551) 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 23 ways as a sum of consecutive naturals, for example, 118141 + ... + 118759.

It is an arithmetic number, because the mean of its divisors is an integer number (2998320).

Almost surely, 2^73320550 is an apocalyptic number.

73320550 is a deficient number, since it is larger than the sum of its proper divisors (70598810).

73320550 is a wasteful number, since it uses less digits than its factorization.

73320550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757 (or 752 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 25.

The square root of 73320550 is about 8562.7419673840. The cubic root of 73320550 is about 418.5447557344.

Adding to 73320550 its reverse (5502337), we get a palindrome (78822887).

The spelling of 73320550 in words is "seventy-three million, three hundred twenty thousand, five hundred fifty".