75623081 has 2 divisors, whose sum is σ = 75623082. Its totient is φ = 75623080.

The previous prime is 75623069. The next prime is 75623087. The reversal of 75623081 is 18032657.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65351056 + 10272025 = 8084^2 + 3205^2 .

It is a cyclic number.

It is not a de Polignac number, because 75623081 - 2¹⁴ = 75606697 is a prime.

It is a super-2 number, since 2×75623081² = 11437700759865122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (75623087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37811540 + 37811541.

It is an arithmetic number, because the mean of its divisors is an integer number (37811541).

Almost surely, 2^75623081 is an apocalyptic number.

It is an amenable number.

75623081 is a deficient number, since it is larger than the sum of its proper divisors (1).

75623081 is an equidigital number, since it uses as much as digits as its factorization.

75623081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 75623081 is about 8696.1532300207. The cubic root of 75623081 is about 422.8809509481.

The spelling of 75623081 in words is "seventy-five million, six hundred twenty-three thousand, eighty-one".