75032813 has 2 divisors, whose sum is σ = 75032814. Its totient is φ = 75032812.

The previous prime is 75032801. The next prime is 75032819. The reversal of 75032813 is 31823057.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74874409 + 158404 = 8653^2 + 398^2 .

It is a cyclic number.

It is not a de Polignac number, because 75032813 - 2¹² = 75028717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75032819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37516406 + 37516407.

It is an arithmetic number, because the mean of its divisors is an integer number (37516407).

Almost surely, 2^75032813 is an apocalyptic number.

It is an amenable number.

75032813 is a deficient number, since it is larger than the sum of its proper divisors (1).

75032813 is an equidigital number, since it uses as much as digits as its factorization.

75032813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 75032813 is about 8662.1482901183. The cubic root of 75032813 is about 421.7778249196. Note that the first 3 decimals are identical.

The spelling of 75032813 in words is "seventy-five million, thirty-two thousand, eight hundred thirteen".