75769457 has 2 divisors, whose sum is σ = 75769458. Its totient is φ = 75769456.

The previous prime is 75769433. The next prime is 75769469. The reversal of 75769457 is 75496757.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59737441 + 16032016 = 7729^2 + 4004^2 .

It is a cyclic number.

It is not a de Polignac number, because 75769457 - 2⁸ = 75769201 is a prime.

It is a super-2 number, since 2×75769457² = 11482021228149698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (75769957) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37884728 + 37884729.

It is an arithmetic number, because the mean of its divisors is an integer number (37884729).

Almost surely, 2^75769457 is an apocalyptic number.

It is an amenable number.

75769457 is a deficient number, since it is larger than the sum of its proper divisors (1).

75769457 is an equidigital number, since it uses as much as digits as its factorization.

75769457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1852200, while the sum is 50.

The square root of 75769457 is about 8704.5652964407. The cubic root of 75769457 is about 423.1536178223.

The spelling of 75769457 in words is "seventy-five million, seven hundred sixty-nine thousand, four hundred fifty-seven".