73780253 has 2 divisors, whose sum is σ = 73780254. Its totient is φ = 73780252.

The previous prime is 73780229. The next prime is 73780313. The reversal of 73780253 is 35208737.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63712324 + 10067929 = 7982^2 + 3173^2 .

It is an emirp because it is prime and its reverse (35208737) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73780253 - 2⁸ = 73779997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73780753) 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 as a sum of consecutive naturals, namely, 36890126 + 36890127.

It is an arithmetic number, because the mean of its divisors is an integer number (36890127).

Almost surely, 2^73780253 is an apocalyptic number.

It is an amenable number.

73780253 is a deficient number, since it is larger than the sum of its proper divisors (1).

73780253 is an equidigital number, since it uses as much as digits as its factorization.

73780253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 73780253 is about 8589.5432358188. The cubic root of 73780253 is about 419.4176604442.

The spelling of 73780253 in words is "seventy-three million, seven hundred eighty thousand, two hundred fifty-three".