73771493 has 2 divisors, whose sum is σ = 73771494. Its totient is φ = 73771492.

The previous prime is 73771427. The next prime is 73771501. The reversal of 73771493 is 39417737.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55606849 + 18164644 = 7457^2 + 4262^2 .

It is a cyclic number.

It is not a de Polignac number, because 73771493 - 2¹⁴ = 73755109 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 73771493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73771403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36885746 + 36885747.

It is an arithmetic number, because the mean of its divisors is an integer number (36885747).

Almost surely, 2^73771493 is an apocalyptic number.

It is an amenable number.

73771493 is a deficient number, since it is larger than the sum of its proper divisors (1).

73771493 is an equidigital number, since it uses as much as digits as its factorization.

73771493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 111132, while the sum is 41.

The square root of 73771493 is about 8589.0332983404. The cubic root of 73771493 is about 419.4010605006.

The spelling of 73771493 in words is "seventy-three million, seven hundred seventy-one thousand, four hundred ninety-three".