76776251 has 2 divisors, whose sum is σ = 76776252. Its totient is φ = 76776250.

The previous prime is 76776241. The next prime is 76776257. The reversal of 76776251 is 15267767.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 76776251 - 2⁶ = 76776187 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 76776199 and 76776208.

It is not a weakly prime, because it can be changed into another prime (76776257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38388125 + 38388126.

It is an arithmetic number, because the mean of its divisors is an integer number (38388126).

Almost surely, 2^76776251 is an apocalyptic number.

76776251 is a deficient number, since it is larger than the sum of its proper divisors (1).

76776251 is an equidigital number, since it uses as much as digits as its factorization.

76776251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 123480, while the sum is 41.

The square root of 76776251 is about 8762.2058295842. The cubic root of 76776251 is about 425.0196087839.

The spelling of 76776251 in words is "seventy-six million, seven hundred seventy-six thousand, two hundred fifty-one".