77452049 has 2 divisors, whose sum is σ = 77452050. Its totient is φ = 77452048.

The previous prime is 77452033. The next prime is 77452079. The reversal of 77452049 is 94025477.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52301824 + 25150225 = 7232^2 + 5015^2 .

It is a cyclic number.

It is not a de Polignac number, because 77452049 - 2⁴ = 77452033 is a prime.

It is not a weakly prime, because it can be changed into another prime (77452019) 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, 38726024 + 38726025.

It is an arithmetic number, because the mean of its divisors is an integer number (38726025).

Almost surely, 2^77452049 is an apocalyptic number.

It is an amenable number.

77452049 is a deficient number, since it is larger than the sum of its proper divisors (1).

77452049 is an equidigital number, since it uses as much as digits as its factorization.

77452049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 77452049 is about 8800.6845756452. The cubic root of 77452049 is about 426.2630000364.

The spelling of 77452049 in words is "seventy-seven million, four hundred fifty-two thousand, forty-nine".