75390013 has 2 divisors, whose sum is σ = 75390014. Its totient is φ = 75390012.

The previous prime is 75390011. The next prime is 75390017. The reversal of 75390013 is 31009357.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72965764 + 2424249 = 8542^2 + 1557^2 .

It is a cyclic number.

It is not a de Polignac number, because 75390013 - 2¹ = 75390011 is a prime.

Together with 75390011, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75390011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37695006 + 37695007.

It is an arithmetic number, because the mean of its divisors is an integer number (37695007).

Almost surely, 2^75390013 is an apocalyptic number.

It is an amenable number.

75390013 is a deficient number, since it is larger than the sum of its proper divisors (1).

75390013 is an equidigital number, since it uses as much as digits as its factorization.

75390013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2835, while the sum is 28.

The square root of 75390013 is about 8682.7422511554. The cubic root of 75390013 is about 422.4460685336.

The spelling of 75390013 in words is "seventy-five million, three hundred ninety thousand, thirteen".