75835381 has 2 divisors, whose sum is σ = 75835382. Its totient is φ = 75835380.

The previous prime is 75835379. The next prime is 75835399. The reversal of 75835381 is 18353857.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56175025 + 19660356 = 7495^2 + 4434^2 .

It is an emirp because it is prime and its reverse (18353857) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75835381 - 2¹ = 75835379 is a prime.

It is a super-2 number, since 2×75835381² = 11502010022830322, which contains 22 as substring.

Together with 75835379, 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 (75835321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37917690 + 37917691.

It is an arithmetic number, because the mean of its divisors is an integer number (37917691).

Almost surely, 2^75835381 is an apocalyptic number.

It is an amenable number.

75835381 is a deficient number, since it is larger than the sum of its proper divisors (1).

75835381 is an equidigital number, since it uses as much as digits as its factorization.

75835381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 100800, while the sum is 40.

The square root of 75835381 is about 8708.3512216722. The cubic root of 75835381 is about 423.2763053084.

The spelling of 75835381 in words is "seventy-five million, eight hundred thirty-five thousand, three hundred eighty-one".