75247493 has 2 divisors, whose sum is σ = 75247494. Its totient is φ = 75247492.

The previous prime is 75247427. The next prime is 75247507. The reversal of 75247493 is 39474257.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70845889 + 4401604 = 8417^2 + 2098^2 .

It is an emirp because it is prime and its reverse (39474257) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75247493 - 2¹⁰ = 75246469 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 75247493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75247093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37623746 + 37623747.

It is an arithmetic number, because the mean of its divisors is an integer number (37623747).

Almost surely, 2^75247493 is an apocalyptic number.

It is an amenable number.

75247493 is a deficient number, since it is larger than the sum of its proper divisors (1).

75247493 is an equidigital number, since it uses as much as digits as its factorization.

75247493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 41.

The square root of 75247493 is about 8674.5312841675. The cubic root of 75247493 is about 422.1796981822.

The spelling of 75247493 in words is "seventy-five million, two hundred forty-seven thousand, four hundred ninety-three".