75788081 has 2 divisors, whose sum is σ = 75788082. Its totient is φ = 75788080.

The previous prime is 75788051. The next prime is 75788113. The reversal of 75788081 is 18088757.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67897600 + 7890481 = 8240^2 + 2809^2 .

It is a cyclic number.

It is not a de Polignac number, because 75788081 - 2¹⁰ = 75787057 is a prime.

It is a super-2 number, since 2×75788081² = 11487666443325122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (75788021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37894040 + 37894041.

It is an arithmetic number, because the mean of its divisors is an integer number (37894041).

Almost surely, 2^75788081 is an apocalyptic number.

It is an amenable number.

75788081 is a deficient number, since it is larger than the sum of its proper divisors (1).

75788081 is an equidigital number, since it uses as much as digits as its factorization.

75788081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 125440, while the sum is 44.

The square root of 75788081 is about 8705.6350141733. The cubic root of 75788081 is about 423.1882851217.

The spelling of 75788081 in words is "seventy-five million, seven hundred eighty-eight thousand, eighty-one".