75006257 has 2 divisors, whose sum is σ = 75006258. Its totient is φ = 75006256.

The previous prime is 75006241. The next prime is 75006331. The reversal of 75006257 is 75260057.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68574961 + 6431296 = 8281^2 + 2536^2 .

It is an emirp because it is prime and its reverse (75260057) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75006257 - 2⁴ = 75006241 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (75006157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37503128 + 37503129.

It is an arithmetic number, because the mean of its divisors is an integer number (37503129).

Almost surely, 2^75006257 is an apocalyptic number.

It is an amenable number.

75006257 is a deficient number, since it is larger than the sum of its proper divisors (1).

75006257 is an equidigital number, since it uses as much as digits as its factorization.

75006257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14700, while the sum is 32.

The square root of 75006257 is about 8660.6152783737. The cubic root of 75006257 is about 421.7280597874.

The spelling of 75006257 in words is "seventy-five million, six thousand, two hundred fifty-seven".