75454213 has 2 divisors, whose sum is σ = 75454214. Its totient is φ = 75454212.

The previous prime is 75454189. The next prime is 75454229. The reversal of 75454213 is 31245457.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70930084 + 4524129 = 8422^2 + 2127^2 .

It is an emirp because it is prime and its reverse (31245457) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75454213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75454273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37727106 + 37727107.

It is an arithmetic number, because the mean of its divisors is an integer number (37727107).

Almost surely, 2^75454213 is an apocalyptic number.

It is an amenable number.

75454213 is a deficient number, since it is larger than the sum of its proper divisors (1).

75454213 is an equidigital number, since it uses as much as digits as its factorization.

75454213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16800, while the sum is 31.

The square root of 75454213 is about 8686.4384531291. The cubic root of 75454213 is about 422.5659488805.

The spelling of 75454213 in words is "seventy-five million, four hundred fifty-four thousand, two hundred thirteen".