75831493 has 2 divisors, whose sum is σ = 75831494. Its totient is φ = 75831492.

The previous prime is 75831443. The next prime is 75831517. The reversal of 75831493 is 39413857.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68525284 + 7306209 = 8278^2 + 2703^2 .

It is a cyclic number.

It is not a de Polignac number, because 75831493 - 2⁹ = 75830981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75831443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37915746 + 37915747.

It is an arithmetic number, because the mean of its divisors is an integer number (37915747).

Almost surely, 2^75831493 is an apocalyptic number.

It is an amenable number.

75831493 is a deficient number, since it is larger than the sum of its proper divisors (1).

75831493 is an equidigital number, since it uses as much as digits as its factorization.

75831493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 40.

The square root of 75831493 is about 8708.1279848197. The cubic root of 75831493 is about 423.2690715415.

The spelling of 75831493 in words is "seventy-five million, eight hundred thirty-one thousand, four hundred ninety-three".