73251361 has 16 divisors (see below), whose sum is σ = 77662800. Its totient is φ = 68992000.

The previous prime is 73251341. The next prime is 73251421. The reversal of 73251361 is 16315237.

It can be written as a sum of positive squares in 8 ways, for example, as 3779136 + 69472225 = 1944^2 + 8335^2 .

It is a cyclic number.

It is not a de Polignac number, because 73251361 - 2¹⁹ = 72727073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73251341) 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 15 ways as a sum of consecutive naturals, for example, 260541 + ... + 260821.

It is an arithmetic number, because the mean of its divisors is an integer number (4853925).

Almost surely, 2^73251361 is an apocalyptic number.

It is an amenable number.

73251361 is a deficient number, since it is larger than the sum of its proper divisors (4411439).

73251361 is a wasteful number, since it uses less digits than its factorization.

73251361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500.

The product of its digits is 3780, while the sum is 28.

The square root of 73251361 is about 8558.7008944115. The cubic root of 73251361 is about 418.4130609283.

Adding to 73251361 its reverse (16315237), we get a palindrome (89566598).

The spelling of 73251361 in words is "seventy-three million, two hundred fifty-one thousand, three hundred sixty-one".