76502381 has 2 divisors, whose sum is σ = 76502382. Its totient is φ = 76502380.

The previous prime is 76502369. The next prime is 76502383. The reversal of 76502381 is 18320567.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49928356 + 26574025 = 7066^2 + 5155^2 .

It is an emirp because it is prime and its reverse (18320567) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76502381 - 2¹⁸ = 76240237 is a prime.

It is a super-2 number, since 2×76502381² = 11705228597338322, which contains 22 as substring.

Together with 76502383, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76502383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38251190 + 38251191.

It is an arithmetic number, because the mean of its divisors is an integer number (38251191).

Almost surely, 2^76502381 is an apocalyptic number.

It is an amenable number.

76502381 is a deficient number, since it is larger than the sum of its proper divisors (1).

76502381 is an equidigital number, since it uses as much as digits as its factorization.

76502381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 76502381 is about 8746.5639539193. The cubic root of 76502381 is about 424.5136415608.

The spelling of 76502381 in words is "seventy-six million, five hundred two thousand, three hundred eighty-one".