75240829 has 2 divisors, whose sum is σ = 75240830. Its totient is φ = 75240828.

The previous prime is 75240791. The next prime is 75240853. The reversal of 75240829 is 92804257.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39564100 + 35676729 = 6290^2 + 5973^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75240829 is a prime.

It is a super-2 number, since 2×75240829² = 11322364697214482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75240899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37620414 + 37620415.

It is an arithmetic number, because the mean of its divisors is an integer number (37620415).

Almost surely, 2^75240829 is an apocalyptic number.

It is an amenable number.

75240829 is a deficient number, since it is larger than the sum of its proper divisors (1).

75240829 is an equidigital number, since it uses as much as digits as its factorization.

75240829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 75240829 is about 8674.1471626898. The cubic root of 75240829 is about 422.1672349162.

The spelling of 75240829 in words is "seventy-five million, two hundred forty thousand, eight hundred twenty-nine".