75783049 has 2 divisors, whose sum is σ = 75783050. Its totient is φ = 75783048.

The previous prime is 75782983. The next prime is 75783053. The reversal of 75783049 is 94038757.

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., 74701449 + 1081600 = 8643^2 + 1040^2 .

It is an emirp because it is prime and its reverse (94038757) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75783049 - 2⁷ = 75782921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 75782996 and 75783014.

It is not a weakly prime, because it can be changed into another prime (75783089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37891524 + 37891525.

It is an arithmetic number, because the mean of its divisors is an integer number (37891525).

Almost surely, 2^75783049 is an apocalyptic number.

It is an amenable number.

75783049 is a deficient number, since it is larger than the sum of its proper divisors (1).

75783049 is an equidigital number, since it uses as much as digits as its factorization.

75783049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 75783049 is about 8705.3460011650. The cubic root of 75783049 is about 423.1789189586.

The spelling of 75783049 in words is "seventy-five million, seven hundred eighty-three thousand, forty-nine".