73727261 has 2 divisors, whose sum is σ = 73727262. Its totient is φ = 73727260.

The previous prime is 73727219. The next prime is 73727263. The reversal of 73727261 is 16272737.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64080025 + 9647236 = 8005^2 + 3106^2 .

It is a cyclic number.

It is not a de Polignac number, because 73727261 - 2⁶ = 73727197 is a prime.

Together with 73727263, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73727263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36863630 + 36863631.

It is an arithmetic number, because the mean of its divisors is an integer number (36863631).

Almost surely, 2^73727261 is an apocalyptic number.

It is an amenable number.

73727261 is a deficient number, since it is larger than the sum of its proper divisors (1).

73727261 is an equidigital number, since it uses as much as digits as its factorization.

73727261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24696, while the sum is 35.

The square root of 73727261 is about 8586.4580008290. The cubic root of 73727261 is about 419.3172220792.

Adding to 73727261 its reverse (16272737), we get a palindrome (89999998).

The spelling of 73727261 in words is "seventy-three million, seven hundred twenty-seven thousand, two hundred sixty-one".