75253643 has 2 divisors, whose sum is σ = 75253644. Its totient is φ = 75253642.

The previous prime is 75253621. The next prime is 75253649. The reversal of 75253643 is 34635257.

It is a strong prime.

It is an emirp because it is prime and its reverse (34635257) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75253643 - 2¹² = 75249547 is a prime.

It is a super-2 number, since 2×75253643² = 11326221569542898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (75253649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37626821 + 37626822.

It is an arithmetic number, because the mean of its divisors is an integer number (37626822).

Almost surely, 2^75253643 is an apocalyptic number.

75253643 is a deficient number, since it is larger than the sum of its proper divisors (1).

75253643 is an equidigital number, since it uses as much as digits as its factorization.

75253643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75600, while the sum is 35.

The square root of 75253643 is about 8674.8857629366. The cubic root of 75253643 is about 422.1911994930.

The spelling of 75253643 in words is "seventy-five million, two hundred fifty-three thousand, six hundred forty-three".