75849481 has 2 divisors, whose sum is σ = 75849482. Its totient is φ = 75849480.

The previous prime is 75849457. The next prime is 75849511. The reversal of 75849481 is 18494857.

It is the 3556-th star number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53523856 + 22325625 = 7316^2 + 4725^2 .

It is a cyclic number.

It is not a de Polignac number, because 75849481 - 2²⁵ = 42295049 is a prime.

It is a super-2 number, since 2×75849481² = 11506287535938722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (75849421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37924740 + 37924741.

It is an arithmetic number, because the mean of its divisors is an integer number (37924741).

Almost surely, 2^75849481 is an apocalyptic number.

It is an amenable number.

75849481 is a deficient number, since it is larger than the sum of its proper divisors (1).

75849481 is an equidigital number, since it uses as much as digits as its factorization.

75849481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 322560, while the sum is 46.

The square root of 75849481 is about 8709.1607517602. The cubic root of 75849481 is about 423.3025368025.

It can be divided in two parts, 75 and 849481, that added together give a triangular number (849556 = T₁₃₀₃).

The spelling of 75849481 in words is "seventy-five million, eight hundred forty-nine thousand, four hundred eighty-one".