75474757 has 2 divisors, whose sum is σ = 75474758. Its totient is φ = 75474756.

The previous prime is 75474743. The next prime is 75474769. The reversal of 75474757 is 75747457.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51179716 + 24295041 = 7154^2 + 4929^2 .

It is an emirp because it is prime and its reverse (75747457) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75474757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75474797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37737378 + 37737379.

It is an arithmetic number, because the mean of its divisors is an integer number (37737379).

Almost surely, 2^75474757 is an apocalyptic number.

It is an amenable number.

75474757 is a deficient number, since it is larger than the sum of its proper divisors (1).

75474757 is an equidigital number, since it uses as much as digits as its factorization.

75474757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 960400, while the sum is 46.

The square root of 75474757 is about 8687.6209056335. The cubic root of 75474757 is about 422.6042962294.

The spelling of 75474757 in words is "seventy-five million, four hundred seventy-four thousand, seven hundred fifty-seven".