75457243 has 2 divisors, whose sum is σ = 75457244. Its totient is φ = 75457242.

The previous prime is 75457229. The next prime is 75457247. The reversal of 75457243 is 34275457.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 75457243 - 2¹⁷ = 75326171 is a prime.

It is a super-2 number, since 2×75457243² = 11387591042322098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (75457247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37728621 + 37728622.

It is an arithmetic number, because the mean of its divisors is an integer number (37728622).

Almost surely, 2^75457243 is an apocalyptic number.

75457243 is a deficient number, since it is larger than the sum of its proper divisors (1).

75457243 is an equidigital number, since it uses as much as digits as its factorization.

75457243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 117600, while the sum is 37.

The square root of 75457243 is about 8686.6128611790. The cubic root of 75457243 is about 422.5716051040.

The spelling of 75457243 in words is "seventy-five million, four hundred fifty-seven thousand, two hundred forty-three".