75257261 has 2 divisors, whose sum is σ = 75257262. Its totient is φ = 75257260.

The previous prime is 75257239. The next prime is 75257269. The reversal of 75257261 is 16275257.

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., 50197225 + 25060036 = 7085^2 + 5006^2 .

It is an emirp because it is prime and its reverse (16275257) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75257261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75257269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37628630 + 37628631.

It is an arithmetic number, because the mean of its divisors is an integer number (37628631).

Almost surely, 2^75257261 is an apocalyptic number.

It is an amenable number.

75257261 is a deficient number, since it is larger than the sum of its proper divisors (1).

75257261 is an equidigital number, since it uses as much as digits as its factorization.

75257261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29400, while the sum is 35.

The square root of 75257261 is about 8675.0942934357. The cubic root of 75257261 is about 422.1979653372.

The spelling of 75257261 in words is "seventy-five million, two hundred fifty-seven thousand, two hundred sixty-one".