75123457 has 2 divisors, whose sum is σ = 75123458. Its totient is φ = 75123456.

The previous prime is 75123407. The next prime is 75123463. The reversal of 75123457 is 75432157.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42302016 + 32821441 = 6504^2 + 5729^2 .

It is a cyclic number.

It is not a de Polignac number, because 75123457 - 2¹⁹ = 74599169 is a prime.

It is not a weakly prime, because it can be changed into another prime (75123407) 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, 37561728 + 37561729.

It is an arithmetic number, because the mean of its divisors is an integer number (37561729).

Almost surely, 2^75123457 is an apocalyptic number.

It is an amenable number.

75123457 is a deficient number, since it is larger than the sum of its proper divisors (1).

75123457 is an equidigital number, since it uses as much as digits as its factorization.

75123457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29400, while the sum is 34.

The square root of 75123457 is about 8667.3789002212. The cubic root of 75123457 is about 421.9476006156.

The spelling of 75123457 in words is "seventy-five million, one hundred twenty-three thousand, four hundred fifty-seven".