77545049 has 2 divisors, whose sum is σ = 77545050. Its totient is φ = 77545048.

The previous prime is 77545033. The next prime is 77545093. The reversal of 77545049 is 94054577.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44689225 + 32855824 = 6685^2 + 5732^2 .

It is a cyclic number.

It is not a de Polignac number, because 77545049 - 2⁴ = 77545033 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 77544997 and 77545015.

It is not a weakly prime, because it can be changed into another prime (77545009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38772524 + 38772525.

It is an arithmetic number, because the mean of its divisors is an integer number (38772525).

Almost surely, 2^77545049 is an apocalyptic number.

It is an amenable number.

77545049 is a deficient number, since it is larger than the sum of its proper divisors (1).

77545049 is an equidigital number, since it uses as much as digits as its factorization.

77545049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 176400, while the sum is 41.

The square root of 77545049 is about 8805.9666703889. The cubic root of 77545049 is about 426.4335425561.

The spelling of 77545049 in words is "seventy-seven million, five hundred forty-five thousand, forty-nine".