75826381 has 2 divisors, whose sum is σ = 75826382. Its totient is φ = 75826380.

The previous prime is 75826339. The next prime is 75826391. The reversal of 75826381 is 18362857.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61763881 + 14062500 = 7859^2 + 3750^2 .

It is a cyclic number.

It is not a de Polignac number, because 75826381 - 2⁷ = 75826253 is a prime.

It is a super-2 number, since 2×75826381² = 11499280111114322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75826301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37913190 + 37913191.

It is an arithmetic number, because the mean of its divisors is an integer number (37913191).

Almost surely, 2^75826381 is an apocalyptic number.

It is an amenable number.

75826381 is a deficient number, since it is larger than the sum of its proper divisors (1).

75826381 is an equidigital number, since it uses as much as digits as its factorization.

75826381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 40.

The square root of 75826381 is about 8707.8344609897. The cubic root of 75826381 is about 423.2595601014.

The spelling of 75826381 in words is "seventy-five million, eight hundred twenty-six thousand, three hundred eighty-one".