76278049 has 2 divisors, whose sum is σ = 76278050. Its totient is φ = 76278048.

The previous prime is 76278029. The next prime is 76278067. The reversal of 76278049 is 94087267.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72250000 + 4028049 = 8500^2 + 2007^2 .

It is an emirp because it is prime and its reverse (94087267) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76278049 - 2¹⁷ = 76146977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 76277996 and 76278014.

It is not a weakly prime, because it can be changed into another prime (76278019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38139024 + 38139025.

It is an arithmetic number, because the mean of its divisors is an integer number (38139025).

Almost surely, 2^76278049 is an apocalyptic number.

It is an amenable number.

76278049 is a deficient number, since it is larger than the sum of its proper divisors (1).

76278049 is an equidigital number, since it uses as much as digits as its factorization.

76278049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 76278049 is about 8733.7305316800. The cubic root of 76278049 is about 424.0982940054.

The spelling of 76278049 in words is "seventy-six million, two hundred seventy-eight thousand, forty-nine".